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Pointer parameter could be declared as pointing to const

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This commit is contained in:
Francois Perrad 2017-08-19 17:16:13 +02:00
parent 468656b4aa
commit 89e64c631e
45 changed files with 164 additions and 164 deletions
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6
agentfwd.h
View File

@ -40,8 +40,8 @@
/* client functions */ /* client functions */
void cli_load_agent_keys(m_list * ret_list); void cli_load_agent_keys(m_list * ret_list);
void agent_buf_sign(buffer *sigblob, sign_key *key, void agent_buf_sign(buffer *sigblob, sign_key *key,
buffer *data_buf); const buffer *data_buf);
void cli_setup_agent(struct Channel *channel); void cli_setup_agent(const struct Channel *channel);
#ifdef __hpux #ifdef __hpux
#define seteuid(a) setresuid(-1, (a), -1) #define seteuid(a) setresuid(-1, (a), -1)
@ -56,7 +56,7 @@ extern const struct ChanType cli_chan_agent;
int svr_agentreq(struct ChanSess * chansess); int svr_agentreq(struct ChanSess * chansess);
void svr_agentcleanup(struct ChanSess * chansess); void svr_agentcleanup(struct ChanSess * chansess);
void svr_agentset(struct ChanSess *chansess); void svr_agentset(const struct ChanSess *chansess);
#endif /* DROPBEAR_SVR_AGENTFWD */ #endif /* DROPBEAR_SVR_AGENTFWD */

6
algo.h
View File

@ -112,8 +112,8 @@ struct dropbear_kex {
const struct ltc_hash_descriptor *hash_desc; const struct ltc_hash_descriptor *hash_desc;
}; };
int have_algo(char* algo, size_t algolen, algo_type algos[]); int have_algo(const char* algo, size_t algolen, const algo_type algos[]);
void buf_put_algolist(buffer * buf, algo_type localalgos[]); void buf_put_algolist(buffer * buf, const algo_type localalgos[]);
enum kexguess2_used { enum kexguess2_used {
KEXGUESS2_LOOK, KEXGUESS2_LOOK,
@ -131,7 +131,7 @@ algo_type * buf_match_algo(buffer* buf, algo_type localalgos[],
#if DROPBEAR_USER_ALGO_LIST #if DROPBEAR_USER_ALGO_LIST
int check_user_algos(const char* user_algo_list, algo_type * algos, int check_user_algos(const char* user_algo_list, algo_type * algos,
const char *algo_desc); const char *algo_desc);
char * algolist_string(algo_type algos[]); char * algolist_string(const algo_type algos[]);
#endif #endif
enum { enum {

4
auth.h
View File

@ -36,7 +36,7 @@ void cli_authinitialise(void);
void recv_msg_userauth_request(void); void recv_msg_userauth_request(void);
void send_msg_userauth_failure(int partial, int incrfail); void send_msg_userauth_failure(int partial, int incrfail);
void send_msg_userauth_success(void); void send_msg_userauth_success(void);
void send_msg_userauth_banner(buffer *msg); void send_msg_userauth_banner(const buffer *msg);
void svr_auth_password(void); void svr_auth_password(void);
void svr_auth_pubkey(void); void svr_auth_pubkey(void);
void svr_auth_pam(void); void svr_auth_pam(void);
@ -74,7 +74,7 @@ void cli_pubkeyfail(void);
void cli_auth_password(void); void cli_auth_password(void);
int cli_auth_pubkey(void); int cli_auth_pubkey(void);
void cli_auth_interactive(void); void cli_auth_interactive(void);
char* getpass_or_cancel(char* prompt); char* getpass_or_cancel(const char* prompt);
void cli_auth_pubkey_cleanup(void); void cli_auth_pubkey_cleanup(void);

8
buffer.c
View File

@ -67,7 +67,7 @@ void buf_free(buffer* buf) {
} }
/* overwrite the contents of the buffer to clear it */ /* overwrite the contents of the buffer to clear it */
void buf_burn(buffer* buf) { void buf_burn(const buffer* buf) {
m_burn(buf->data, buf->size); m_burn(buf->data, buf->size);
@ -91,7 +91,7 @@ buffer* buf_resize(buffer *buf, unsigned int newsize) {
/* Create a copy of buf, allocating required memory etc. */ /* Create a copy of buf, allocating required memory etc. */
/* The new buffer is sized the same as the length of the source buffer. */ /* The new buffer is sized the same as the length of the source buffer. */
buffer* buf_newcopy(buffer* buf) { buffer* buf_newcopy(const buffer* buf) {
buffer* ret; buffer* ret;
@ -184,7 +184,7 @@ void buf_putbyte(buffer* buf, unsigned char val) {
/* returns an in-place pointer to the buffer, checking that /* returns an in-place pointer to the buffer, checking that
* the next len bytes from that position can be used */ * the next len bytes from that position can be used */
unsigned char* buf_getptr(buffer* buf, unsigned int len) { unsigned char* buf_getptr(const buffer* buf, unsigned int len) {
if (len > BUF_MAX_INCR || buf->pos + len > buf->len) { if (len > BUF_MAX_INCR || buf->pos + len > buf->len) {
dropbear_exit("Bad buf_getptr"); dropbear_exit("Bad buf_getptr");
@ -194,7 +194,7 @@ unsigned char* buf_getptr(buffer* buf, unsigned int len) {
/* like buf_getptr, but checks against total size, not used length. /* like buf_getptr, but checks against total size, not used length.
* This allows writing past the used length, but not past the size */ * This allows writing past the used length, but not past the size */
unsigned char* buf_getwriteptr(buffer* buf, unsigned int len) { unsigned char* buf_getwriteptr(const buffer* buf, unsigned int len) {
if (len > BUF_MAX_INCR || buf->pos + len > buf->size) { if (len > BUF_MAX_INCR || buf->pos + len > buf->size) {
dropbear_exit("Bad buf_getwriteptr"); dropbear_exit("Bad buf_getwriteptr");

8
buffer.h
View File

@ -44,8 +44,8 @@ buffer * buf_new(unsigned int size);
/* Possibly returns a new buffer*, like realloc() */ /* Possibly returns a new buffer*, like realloc() */
buffer * buf_resize(buffer *buf, unsigned int newsize); buffer * buf_resize(buffer *buf, unsigned int newsize);
void buf_free(buffer* buf); void buf_free(buffer* buf);
void buf_burn(buffer* buf); void buf_burn(const buffer* buf);
buffer* buf_newcopy(buffer* buf); buffer* buf_newcopy(const buffer* buf);
void buf_setlen(buffer* buf, unsigned int len); void buf_setlen(buffer* buf, unsigned int len);
void buf_incrlen(buffer* buf, unsigned int incr); void buf_incrlen(buffer* buf, unsigned int incr);
void buf_setpos(buffer* buf, unsigned int pos); void buf_setpos(buffer* buf, unsigned int pos);
@ -54,8 +54,8 @@ void buf_incrwritepos(buffer* buf, unsigned int incr);
unsigned char buf_getbyte(buffer* buf); unsigned char buf_getbyte(buffer* buf);
unsigned char buf_getbool(buffer* buf); unsigned char buf_getbool(buffer* buf);
void buf_putbyte(buffer* buf, unsigned char val); void buf_putbyte(buffer* buf, unsigned char val);
unsigned char* buf_getptr(buffer* buf, unsigned int len); unsigned char* buf_getptr(const buffer* buf, unsigned int len);
unsigned char* buf_getwriteptr(buffer* buf, unsigned int len); unsigned char* buf_getwriteptr(const buffer* buf, unsigned int len);
char* buf_getstring(buffer* buf, unsigned int *retlen); char* buf_getstring(buffer* buf, unsigned int *retlen);
buffer * buf_getstringbuf(buffer *buf); buffer * buf_getstringbuf(buffer *buf);
void buf_eatstring(buffer *buf); void buf_eatstring(buffer *buf);

8
channel.h
View File

@ -107,7 +107,7 @@ void channel_connect_done(int result, int sock, void* user_data, const char* err
void chaninitialise(const struct ChanType *chantypes[]); void chaninitialise(const struct ChanType *chantypes[]);
void chancleanup(void); void chancleanup(void);
void setchannelfds(fd_set *readfds, fd_set *writefds, int allow_reads); void setchannelfds(fd_set *readfds, fd_set *writefds, int allow_reads);
void channelio(fd_set *readfd, fd_set *writefd); void channelio(const fd_set *readfd, const fd_set *writefd);
struct Channel* getchannel(void); struct Channel* getchannel(void);
/* Returns an arbitrary channel that is in a ready state - not /* Returns an arbitrary channel that is in a ready state - not
being initialised and no EOF in either direction. NULL if none. */ being initialised and no EOF in either direction. NULL if none. */
@ -115,8 +115,8 @@ struct Channel* get_any_ready_channel(void);
void recv_msg_channel_open(void); void recv_msg_channel_open(void);
void recv_msg_channel_request(void); void recv_msg_channel_request(void);
void send_msg_channel_failure(struct Channel *channel); void send_msg_channel_failure(const struct Channel *channel);
void send_msg_channel_success(struct Channel *channel); void send_msg_channel_success(const struct Channel *channel);
void recv_msg_channel_data(void); void recv_msg_channel_data(void);
void recv_msg_channel_extended_data(void); void recv_msg_channel_extended_data(void);
void recv_msg_channel_window_adjust(void); void recv_msg_channel_window_adjust(void);
@ -135,7 +135,7 @@ int send_msg_channel_open_init(int fd, const struct ChanType *type);
void recv_msg_channel_open_confirmation(void); void recv_msg_channel_open_confirmation(void);
void recv_msg_channel_open_failure(void); void recv_msg_channel_open_failure(void);
#endif #endif
void start_send_channel_request(struct Channel *channel, char *type); void start_send_channel_request(const struct Channel *channel, const char *type);
void send_msg_request_success(void); void send_msg_request_success(void);
void send_msg_request_failure(void); void send_msg_request_failure(void);

8
circbuffer.c
View File

@ -56,19 +56,19 @@ void cbuf_free(circbuffer * cbuf) {
m_free(cbuf); m_free(cbuf);
} }
unsigned int cbuf_getused(circbuffer * cbuf) { unsigned int cbuf_getused(const circbuffer * cbuf) {
return cbuf->used; return cbuf->used;
} }
unsigned int cbuf_getavail(circbuffer * cbuf) { unsigned int cbuf_getavail(const circbuffer * cbuf) {
return cbuf->size - cbuf->used; return cbuf->size - cbuf->used;
} }
unsigned int cbuf_writelen(circbuffer *cbuf) { unsigned int cbuf_writelen(const circbuffer *cbuf) {
dropbear_assert(cbuf->used <= cbuf->size); dropbear_assert(cbuf->used <= cbuf->size);
dropbear_assert(((2*cbuf->size)+cbuf->writepos-cbuf->readpos)%cbuf->size == cbuf->used%cbuf->size); dropbear_assert(((2*cbuf->size)+cbuf->writepos-cbuf->readpos)%cbuf->size == cbuf->used%cbuf->size);
@ -86,7 +86,7 @@ unsigned int cbuf_writelen(circbuffer *cbuf) {
return cbuf->size - cbuf->writepos; return cbuf->size - cbuf->writepos;
} }
void cbuf_readptrs(circbuffer *cbuf, void cbuf_readptrs(const circbuffer *cbuf,
unsigned char **p1, unsigned int *len1, unsigned char **p1, unsigned int *len1,
unsigned char **p2, unsigned int *len2) { unsigned char **p2, unsigned int *len2) {
*p1 = &cbuf->data[cbuf->readpos]; *p1 = &cbuf->data[cbuf->readpos];

8
circbuffer.h
View File

@ -38,12 +38,12 @@ typedef struct circbuf circbuffer;
circbuffer * cbuf_new(unsigned int size); circbuffer * cbuf_new(unsigned int size);
void cbuf_free(circbuffer * cbuf); void cbuf_free(circbuffer * cbuf);
unsigned int cbuf_getused(circbuffer * cbuf); /* how much data stored */ unsigned int cbuf_getused(const circbuffer * cbuf); /* how much data stored */
unsigned int cbuf_getavail(circbuffer * cbuf); /* how much we can write */ unsigned int cbuf_getavail(const circbuffer * cbuf); /* how much we can write */
unsigned int cbuf_writelen(circbuffer *cbuf); /* max linear write len */ unsigned int cbuf_writelen(const circbuffer *cbuf); /* max linear write len */
/* returns pointers to the two portions of the circular buffer that can be read */ /* returns pointers to the two portions of the circular buffer that can be read */
void cbuf_readptrs(circbuffer *cbuf, void cbuf_readptrs(const circbuffer *cbuf,
unsigned char **p1, unsigned int *len1, unsigned char **p1, unsigned int *len1,
unsigned char **p2, unsigned int *len2); unsigned char **p2, unsigned int *len2);
unsigned char* cbuf_writeptr(circbuffer *cbuf, unsigned int len); unsigned char* cbuf_writeptr(circbuffer *cbuf, unsigned int len);

6
cli-agentfwd.c
View File

@ -108,7 +108,7 @@ static int new_agent_chan(struct Channel * channel) {
data Any data, depending on packet type. Encoding as in the ssh packet data Any data, depending on packet type. Encoding as in the ssh packet
protocol. protocol.
*/ */
static buffer * agent_request(unsigned char type, buffer *data) { static buffer * agent_request(unsigned char type, const buffer *data) {
buffer * payload = NULL; buffer * payload = NULL;
buffer * inbuf = NULL; buffer * inbuf = NULL;
@ -230,7 +230,7 @@ out:
} }
} }
void cli_setup_agent(struct Channel *channel) { void cli_setup_agent(const struct Channel *channel) {
if (!getenv("SSH_AUTH_SOCK")) { if (!getenv("SSH_AUTH_SOCK")) {
return; return;
} }
@ -254,7 +254,7 @@ void cli_load_agent_keys(m_list *ret_list) {
} }
void agent_buf_sign(buffer *sigblob, sign_key *key, void agent_buf_sign(buffer *sigblob, sign_key *key,
buffer *data_buf) { const buffer *data_buf) {
buffer *request_data = NULL; buffer *request_data = NULL;
buffer *response = NULL; buffer *response = NULL;
unsigned int siglen; unsigned int siglen;

2
cli-auth.c
View File

@ -331,7 +331,7 @@ int cli_auth_try() {
#if DROPBEAR_CLI_PASSWORD_AUTH || DROPBEAR_CLI_INTERACT_AUTH #if DROPBEAR_CLI_PASSWORD_AUTH || DROPBEAR_CLI_INTERACT_AUTH
/* A helper for getpass() that exits if the user cancels. The returned /* A helper for getpass() that exits if the user cancels. The returned
* password is statically allocated by getpass() */ * password is statically allocated by getpass() */
char* getpass_or_cancel(char* prompt) char* getpass_or_cancel(const char* prompt)
{ {
char* password = NULL; char* password = NULL;

2
cli-authpubkey.c
View File

@ -121,7 +121,7 @@ void recv_msg_userauth_pk_ok() {
} }
void cli_buf_put_sign(buffer* buf, sign_key *key, int type, void cli_buf_put_sign(buffer* buf, sign_key *key, int type,
buffer *data_buf) { const buffer *data_buf) {
#if DROPBEAR_CLI_AGENTFWD #if DROPBEAR_CLI_AGENTFWD
if (key->source == SIGNKEY_SOURCE_AGENT) { if (key->source == SIGNKEY_SOURCE_AGENT) {
/* Format the agent signature ourselves, as buf_put_sign would. */ /* Format the agent signature ourselves, as buf_put_sign would. */

8
cli-chansession.c
View File

@ -38,8 +38,8 @@
static void cli_closechansess(struct Channel *channel); static void cli_closechansess(struct Channel *channel);
static int cli_initchansess(struct Channel *channel); static int cli_initchansess(struct Channel *channel);
static void cli_chansessreq(struct Channel *channel); static void cli_chansessreq(struct Channel *channel);
static void send_chansess_pty_req(struct Channel *channel); static void send_chansess_pty_req(const struct Channel *channel);
static void send_chansess_shell_req(struct Channel *channel); static void send_chansess_shell_req(const struct Channel *channel);
static void cli_escape_handler(struct Channel *channel, unsigned char* buf, int *len); static void cli_escape_handler(struct Channel *channel, unsigned char* buf, int *len);
static int cli_init_netcat(struct Channel *channel); static int cli_init_netcat(struct Channel *channel);
@ -270,7 +270,7 @@ void cli_chansess_winchange() {
cli_ses.winchange = 0; cli_ses.winchange = 0;
} }
static void send_chansess_pty_req(struct Channel *channel) { static void send_chansess_pty_req(const struct Channel *channel) {
char* term = NULL; char* term = NULL;
@ -303,7 +303,7 @@ static void send_chansess_pty_req(struct Channel *channel) {
TRACE(("leave send_chansess_pty_req")) TRACE(("leave send_chansess_pty_req"))
} }
static void send_chansess_shell_req(struct Channel *channel) { static void send_chansess_shell_req(const struct Channel *channel) {
char* reqtype = NULL; char* reqtype = NULL;

6
cli-kex.c
View File

@ -39,7 +39,7 @@
#include "ecc.h" #include "ecc.h"
static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen); static void checkhostkey(const unsigned char* keyblob, unsigned int keybloblen);
#define MAX_KNOWNHOSTS_LINE 4500 #define MAX_KNOWNHOSTS_LINE 4500
void send_msg_kexdh_init() { void send_msg_kexdh_init() {
@ -185,7 +185,7 @@ void recv_msg_kexdh_reply() {
TRACE(("leave recv_msg_kexdh_init")) TRACE(("leave recv_msg_kexdh_init"))
} }
static void ask_to_confirm(unsigned char* keyblob, unsigned int keybloblen, static void ask_to_confirm(const unsigned char* keyblob, unsigned int keybloblen,
const char* algoname) { const char* algoname) {
char* fp = NULL; char* fp = NULL;
@ -282,7 +282,7 @@ out:
return hostsfile; return hostsfile;
} }
static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { static void checkhostkey(const unsigned char* keyblob, unsigned int keybloblen) {
FILE *hostsfile = NULL; FILE *hostsfile = NULL;
int readonly = 0; int readonly = 0;

6
common-algo.c
View File

@ -314,7 +314,7 @@ algo_type sshkex[] = {
* against. * against.
* Returns DROPBEAR_SUCCESS if we have a match for algo, DROPBEAR_FAILURE * Returns DROPBEAR_SUCCESS if we have a match for algo, DROPBEAR_FAILURE
* otherwise */ * otherwise */
int have_algo(char* algo, size_t algolen, algo_type algos[]) { int have_algo(const char* algo, size_t algolen, const algo_type algos[]) {
int i; int i;
@ -329,7 +329,7 @@ int have_algo(char* algo, size_t algolen, algo_type algos[]) {
} }
/* Output a comma separated list of algorithms to a buffer */ /* Output a comma separated list of algorithms to a buffer */
void buf_put_algolist(buffer * buf, algo_type localalgos[]) { void buf_put_algolist(buffer * buf, const algo_type localalgos[]) {
unsigned int i, len; unsigned int i, len;
unsigned int donefirst = 0; unsigned int donefirst = 0;
@ -501,7 +501,7 @@ get_algo_usable(algo_type algos[], const char * algo_name)
#if DROPBEAR_USER_ALGO_LIST #if DROPBEAR_USER_ALGO_LIST
char * char *
algolist_string(algo_type algos[]) algolist_string(const algo_type algos[])
{ {
char *ret_list; char *ret_list;
buffer *b = buf_new(200); buffer *b = buf_new(200);

22
common-channel.c
View File

@ -38,18 +38,18 @@
static void send_msg_channel_open_failure(unsigned int remotechan, int reason, static void send_msg_channel_open_failure(unsigned int remotechan, int reason,
const char *text, const char *lang); const char *text, const char *lang);
static void send_msg_channel_open_confirmation(struct Channel* channel, static void send_msg_channel_open_confirmation(const struct Channel* channel,
unsigned int recvwindow, unsigned int recvwindow,
unsigned int recvmaxpacket); unsigned int recvmaxpacket);
static int writechannel(struct Channel* channel, int fd, circbuffer *cbuf, static int writechannel(struct Channel* channel, int fd, circbuffer *cbuf,
const unsigned char *moredata, unsigned int *morelen); const unsigned char *moredata, unsigned int *morelen);
static void send_msg_channel_window_adjust(struct Channel *channel, static void send_msg_channel_window_adjust(const struct Channel *channel,
unsigned int incr); unsigned int incr);
static void send_msg_channel_data(struct Channel *channel, int isextended); static void send_msg_channel_data(struct Channel *channel, int isextended);
static void send_msg_channel_eof(struct Channel *channel); static void send_msg_channel_eof(struct Channel *channel);
static void send_msg_channel_close(struct Channel *channel); static void send_msg_channel_close(struct Channel *channel);
static void remove_channel(struct Channel *channel); static void remove_channel(struct Channel *channel);
static unsigned int write_pending(struct Channel * channel); static unsigned int write_pending(const struct Channel * channel);
static void check_close(struct Channel *channel); static void check_close(struct Channel *channel);
static void close_chan_fd(struct Channel *channel, int fd, int how); static void close_chan_fd(struct Channel *channel, int fd, int how);
@ -198,7 +198,7 @@ struct Channel* getchannel() {
} }
/* Iterate through the channels, performing IO if available */ /* Iterate through the channels, performing IO if available */
void channelio(fd_set *readfds, fd_set *writefds) { void channelio(const fd_set *readfds, const fd_set *writefds) {
/* Listeners such as TCP, X11, agent-auth */ /* Listeners such as TCP, X11, agent-auth */
struct Channel *channel; struct Channel *channel;
@ -262,7 +262,7 @@ void channelio(fd_set *readfds, fd_set *writefds) {
/* Returns true if there is data remaining to be written to stdin or /* Returns true if there is data remaining to be written to stdin or
* stderr of a channel's endpoint. */ * stderr of a channel's endpoint. */
static unsigned int write_pending(struct Channel * channel) { static unsigned int write_pending(const struct Channel * channel) {
if (channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0) { if (channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0) {
return 1; return 1;
@ -903,7 +903,7 @@ void recv_msg_channel_window_adjust() {
/* Increment the incoming data window for a channel, and let the remote /* Increment the incoming data window for a channel, and let the remote
* end know */ * end know */
static void send_msg_channel_window_adjust(struct Channel* channel, static void send_msg_channel_window_adjust(const struct Channel* channel,
unsigned int incr) { unsigned int incr) {
TRACE(("sending window adjust %d", incr)) TRACE(("sending window adjust %d", incr))
@ -1008,7 +1008,7 @@ cleanup:
} }
/* Send a failure message */ /* Send a failure message */
void send_msg_channel_failure(struct Channel *channel) { void send_msg_channel_failure(const struct Channel *channel) {
TRACE(("enter send_msg_channel_failure")) TRACE(("enter send_msg_channel_failure"))
CHECKCLEARTOWRITE(); CHECKCLEARTOWRITE();
@ -1021,7 +1021,7 @@ void send_msg_channel_failure(struct Channel *channel) {
} }
/* Send a success message */ /* Send a success message */
void send_msg_channel_success(struct Channel *channel) { void send_msg_channel_success(const struct Channel *channel) {
TRACE(("enter send_msg_channel_success")) TRACE(("enter send_msg_channel_success"))
CHECKCLEARTOWRITE(); CHECKCLEARTOWRITE();
@ -1053,7 +1053,7 @@ static void send_msg_channel_open_failure(unsigned int remotechan,
/* Confirm a channel open, and let the remote end know what number we've /* Confirm a channel open, and let the remote end know what number we've
* allocated and the receive parameters */ * allocated and the receive parameters */
static void send_msg_channel_open_confirmation(struct Channel* channel, static void send_msg_channel_open_confirmation(const struct Channel* channel,
unsigned int recvwindow, unsigned int recvwindow,
unsigned int recvmaxpacket) { unsigned int recvmaxpacket) {
@ -1239,8 +1239,8 @@ struct Channel* get_any_ready_channel() {
return NULL; return NULL;
} }
void start_send_channel_request(struct Channel *channel, void start_send_channel_request(const struct Channel *channel,
char *type) { const char *type) {
CHECKCLEARTOWRITE(); CHECKCLEARTOWRITE();
buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST);

2
common-kex.c
View File

@ -714,7 +714,7 @@ void free_kexcurve25519_param(struct kex_curve25519_param *param)
m_free(param); m_free(param);
} }
void kexcurve25519_comb_key(struct kex_curve25519_param *param, buffer *buf_pub_them, void kexcurve25519_comb_key(const struct kex_curve25519_param *param, const buffer *buf_pub_them,
sign_key *hostkey) { sign_key *hostkey) {
unsigned char out[CURVE25519_LEN]; unsigned char out[CURVE25519_LEN];
const unsigned char* Q_C = NULL; const unsigned char* Q_C = NULL;

2
dbrandom.c
View File

@ -141,7 +141,7 @@ out:
return ret; return ret;
} }
void addrandom(unsigned char * buf, unsigned int len) void addrandom(const unsigned char * buf, unsigned int len)
{ {
hash_state hs; hash_state hs;

2
dbrandom.h
View File

@ -29,7 +29,7 @@
void seedrandom(void); void seedrandom(void);
void genrandom(unsigned char* buf, unsigned int len); void genrandom(unsigned char* buf, unsigned int len);
void addrandom(unsigned char * buf, unsigned int len); void addrandom(const unsigned char * buf, unsigned int len);
void gen_random_mpint(mp_int *max, mp_int *rand); void gen_random_mpint(mp_int *max, mp_int *rand);
#endif /* DROPBEAR_RANDOM_H_ */ #endif /* DROPBEAR_RANDOM_H_ */

8
dss.c
View File

@ -127,7 +127,7 @@ void dss_key_free(dropbear_dss_key *key) {
* mpint g * mpint g
* mpint y * mpint y
*/ */
void buf_put_dss_pub_key(buffer* buf, dropbear_dss_key *key) { void buf_put_dss_pub_key(buffer* buf, const dropbear_dss_key *key) {
dropbear_assert(key != NULL); dropbear_assert(key != NULL);
buf_putstring(buf, SSH_SIGNKEY_DSS, SSH_SIGNKEY_DSS_LEN); buf_putstring(buf, SSH_SIGNKEY_DSS, SSH_SIGNKEY_DSS_LEN);
@ -139,7 +139,7 @@ void buf_put_dss_pub_key(buffer* buf, dropbear_dss_key *key) {
} }
/* Same as buf_put_dss_pub_key, but with the private "x" key appended */ /* Same as buf_put_dss_pub_key, but with the private "x" key appended */
void buf_put_dss_priv_key(buffer* buf, dropbear_dss_key *key) { void buf_put_dss_priv_key(buffer* buf, const dropbear_dss_key *key) {
dropbear_assert(key != NULL); dropbear_assert(key != NULL);
buf_put_dss_pub_key(buf, key); buf_put_dss_pub_key(buf, key);
@ -150,7 +150,7 @@ void buf_put_dss_priv_key(buffer* buf, dropbear_dss_key *key) {
#if DROPBEAR_SIGNKEY_VERIFY #if DROPBEAR_SIGNKEY_VERIFY
/* Verify a DSS signature (in buf) made on data by the key given. /* Verify a DSS signature (in buf) made on data by the key given.
* returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ * returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
int buf_dss_verify(buffer* buf, dropbear_dss_key *key, buffer *data_buf) { int buf_dss_verify(buffer* buf, const dropbear_dss_key *key, const buffer *data_buf) {
unsigned char msghash[SHA1_HASH_SIZE]; unsigned char msghash[SHA1_HASH_SIZE];
hash_state hs; hash_state hs;
int ret = DROPBEAR_FAILURE; int ret = DROPBEAR_FAILURE;
@ -255,7 +255,7 @@ out:
/* Sign the data presented with key, writing the signature contents /* Sign the data presented with key, writing the signature contents
* to the buffer */ * to the buffer */
void buf_put_dss_sign(buffer* buf, dropbear_dss_key *key, buffer *data_buf) { void buf_put_dss_sign(buffer* buf, const dropbear_dss_key *key, const buffer *data_buf) {
unsigned char msghash[SHA1_HASH_SIZE]; unsigned char msghash[SHA1_HASH_SIZE];
unsigned int writelen; unsigned int writelen;
unsigned int i; unsigned int i;

8
dss.h
View File

@ -44,14 +44,14 @@ typedef struct {
#define DSS_P_BITS 1024 #define DSS_P_BITS 1024
#define DSS_Q_BITS 160 #define DSS_Q_BITS 160
void buf_put_dss_sign(buffer* buf, dropbear_dss_key *key, buffer *data_buf); void buf_put_dss_sign(buffer* buf, const dropbear_dss_key *key, const buffer *data_buf);
#if DROPBEAR_SIGNKEY_VERIFY #if DROPBEAR_SIGNKEY_VERIFY
int buf_dss_verify(buffer* buf, dropbear_dss_key *key, buffer *data_buf); int buf_dss_verify(buffer* buf, const dropbear_dss_key *key, const buffer *data_buf);
#endif #endif
int buf_get_dss_pub_key(buffer* buf, dropbear_dss_key *key); int buf_get_dss_pub_key(buffer* buf, dropbear_dss_key *key);
int buf_get_dss_priv_key(buffer* buf, dropbear_dss_key *key); int buf_get_dss_priv_key(buffer* buf, dropbear_dss_key *key);
void buf_put_dss_pub_key(buffer* buf, dropbear_dss_key *key); void buf_put_dss_pub_key(buffer* buf, const dropbear_dss_key *key);
void buf_put_dss_priv_key(buffer* buf, dropbear_dss_key *key); void buf_put_dss_priv_key(buffer* buf, const dropbear_dss_key *key);
void dss_key_free(dropbear_dss_key *key); void dss_key_free(dropbear_dss_key *key);
#endif /* DROPBEAR_DSS */ #endif /* DROPBEAR_DSS */

4
ecc.c
View File

@ -82,7 +82,7 @@ ecc_key * new_ecc_key(void) {
/* Copied from libtomcrypt ecc_import.c (version there is static), modified /* Copied from libtomcrypt ecc_import.c (version there is static), modified
for different mp_int pointer without LTC_SOURCE */ for different mp_int pointer without LTC_SOURCE */
static int ecc_is_point(ecc_key *key) static int ecc_is_point(const ecc_key *key)
{ {
mp_int *prime, *b, *t1, *t2; mp_int *prime, *b, *t1, *t2;
int err; int err;
@ -213,7 +213,7 @@ ecc_key * buf_get_ecc_raw_pubkey(buffer *buf, const struct dropbear_ecc_curve *c
/* a modified version of libtomcrypt's "ecc_shared_secret" to output /* a modified version of libtomcrypt's "ecc_shared_secret" to output
a mp_int instead. */ a mp_int instead. */
mp_int * dropbear_ecc_shared_secret(ecc_key *public_key, ecc_key *private_key) mp_int * dropbear_ecc_shared_secret(ecc_key *public_key, const ecc_key *private_key)
{ {
ecc_point *result = NULL; ecc_point *result = NULL;
mp_int *prime = NULL, *shared_secret = NULL; mp_int *prime = NULL, *shared_secret = NULL;

2
ecc.h
View File

@ -29,7 +29,7 @@ void buf_put_ecc_raw_pubkey_string(buffer *buf, ecc_key *key);
ecc_key * buf_get_ecc_raw_pubkey(buffer *buf, const struct dropbear_ecc_curve *curve); ecc_key * buf_get_ecc_raw_pubkey(buffer *buf, const struct dropbear_ecc_curve *curve);
int buf_get_ecc_privkey_string(buffer *buf, ecc_key *key); int buf_get_ecc_privkey_string(buffer *buf, ecc_key *key);
mp_int * dropbear_ecc_shared_secret(ecc_key *pub_key, ecc_key *priv_key); mp_int * dropbear_ecc_shared_secret(ecc_key *pub_key, const ecc_key *priv_key);
#endif #endif

6
ecdsa.c
View File

@ -15,7 +15,7 @@ int signkey_is_ecdsa(enum signkey_type type)
|| type == DROPBEAR_SIGNKEY_ECDSA_NISTP521; || type == DROPBEAR_SIGNKEY_ECDSA_NISTP521;
} }
enum signkey_type ecdsa_signkey_type(ecc_key * key) { enum signkey_type ecdsa_signkey_type(const ecc_key * key) {
#if DROPBEAR_ECC_256 #if DROPBEAR_ECC_256
if (key->dp == ecc_curve_nistp256.dp) { if (key->dp == ecc_curve_nistp256.dp) {
return DROPBEAR_SIGNKEY_ECDSA_NISTP256; return DROPBEAR_SIGNKEY_ECDSA_NISTP256;
@ -154,7 +154,7 @@ void buf_put_ecdsa_priv_key(buffer *buf, ecc_key *key) {
buf_putmpint(buf, key->k); buf_putmpint(buf, key->k);
} }
void buf_put_ecdsa_sign(buffer *buf, ecc_key *key, buffer *data_buf) { void buf_put_ecdsa_sign(buffer *buf, const ecc_key *key, const buffer *data_buf) {
/* Based on libtomcrypt's ecc_sign_hash but without the asn1 */ /* Based on libtomcrypt's ecc_sign_hash but without the asn1 */
int err = DROPBEAR_FAILURE; int err = DROPBEAR_FAILURE;
struct dropbear_ecc_curve *curve = NULL; struct dropbear_ecc_curve *curve = NULL;
@ -272,7 +272,7 @@ out:
} }
int buf_ecdsa_verify(buffer *buf, ecc_key *key, buffer *data_buf) { int buf_ecdsa_verify(buffer *buf, const ecc_key *key, const buffer *data_buf) {
/* Based on libtomcrypt's ecc_verify_hash but without the asn1 */ /* Based on libtomcrypt's ecc_verify_hash but without the asn1 */
int ret = DROPBEAR_FAILURE; int ret = DROPBEAR_FAILURE;
hash_state hs; hash_state hs;

6
ecdsa.h
View File

@ -23,10 +23,10 @@ ecc_key *buf_get_ecdsa_pub_key(buffer* buf);
ecc_key *buf_get_ecdsa_priv_key(buffer *buf); ecc_key *buf_get_ecdsa_priv_key(buffer *buf);
void buf_put_ecdsa_pub_key(buffer *buf, ecc_key *key); void buf_put_ecdsa_pub_key(buffer *buf, ecc_key *key);
void buf_put_ecdsa_priv_key(buffer *buf, ecc_key *key); void buf_put_ecdsa_priv_key(buffer *buf, ecc_key *key);
enum signkey_type ecdsa_signkey_type(ecc_key * key); enum signkey_type ecdsa_signkey_type(const ecc_key * key);
void buf_put_ecdsa_sign(buffer *buf, ecc_key *key, buffer *data_buf); void buf_put_ecdsa_sign(buffer *buf, const ecc_key *key, const buffer *data_buf);
int buf_ecdsa_verify(buffer *buf, ecc_key *key, buffer *data_buf); int buf_ecdsa_verify(buffer *buf, const ecc_key *key, const buffer *data_buf);
/* Returns 1 on success */ /* Returns 1 on success */
int signkey_is_ecdsa(enum signkey_type type); int signkey_is_ecdsa(enum signkey_type type);

20
gendss.c
View File

@ -37,11 +37,11 @@
#if DROPBEAR_DSS #if DROPBEAR_DSS
static void getq(dropbear_dss_key *key); static void getq(const dropbear_dss_key *key);
static void getp(dropbear_dss_key *key, unsigned int size); static void getp(const dropbear_dss_key *key, unsigned int size);
static void getg(dropbear_dss_key *key); static void getg(const dropbear_dss_key *key);
static void getx(dropbear_dss_key *key); static void getx(const dropbear_dss_key *key);
static void gety(dropbear_dss_key *key); static void gety(const dropbear_dss_key *key);
dropbear_dss_key * gen_dss_priv_key(unsigned int size) { dropbear_dss_key * gen_dss_priv_key(unsigned int size) {
@ -65,7 +65,7 @@ dropbear_dss_key * gen_dss_priv_key(unsigned int size) {
} }
static void getq(dropbear_dss_key *key) { static void getq(const dropbear_dss_key *key) {
unsigned char buf[QSIZE]; unsigned char buf[QSIZE];
@ -83,7 +83,7 @@ static void getq(dropbear_dss_key *key) {
} }
} }
static void getp(dropbear_dss_key *key, unsigned int size) { static void getp(const dropbear_dss_key *key, unsigned int size) {
DEF_MP_INT(tempX); DEF_MP_INT(tempX);
DEF_MP_INT(tempC); DEF_MP_INT(tempC);
@ -142,7 +142,7 @@ static void getp(dropbear_dss_key *key, unsigned int size) {
m_free(buf); m_free(buf);
} }
static void getg(dropbear_dss_key * key) { static void getg(const dropbear_dss_key * key) {
DEF_MP_INT(div); DEF_MP_INT(div);
DEF_MP_INT(h); DEF_MP_INT(h);
@ -179,12 +179,12 @@ static void getg(dropbear_dss_key * key) {
mp_clear_multi(&div, &h, &val, NULL); mp_clear_multi(&div, &h, &val, NULL);
} }
static void getx(dropbear_dss_key *key) { static void getx(const dropbear_dss_key *key) {
gen_random_mpint(key->q, key->x); gen_random_mpint(key->q, key->x);
} }
static void gety(dropbear_dss_key *key) { static void gety(const dropbear_dss_key *key) {
if (mp_exptmod(key->g, key->x, key->p, key->y) != MP_OKAY) { if (mp_exptmod(key->g, key->x, key->p, key->y) != MP_OKAY) {
fprintf(stderr, "DSS key generation failed\n"); fprintf(stderr, "DSS key generation failed\n");

2
kex.h
View File

@ -50,7 +50,7 @@ void kexecdh_comb_key(struct kex_ecdh_param *param, buffer *pub_them,
#if DROPBEAR_CURVE25519 #if DROPBEAR_CURVE25519
struct kex_curve25519_param *gen_kexcurve25519_param(void); struct kex_curve25519_param *gen_kexcurve25519_param(void);
void free_kexcurve25519_param(struct kex_curve25519_param *param); void free_kexcurve25519_param(struct kex_curve25519_param *param);
void kexcurve25519_comb_key(struct kex_curve25519_param *param, buffer *pub_them, void kexcurve25519_comb_key(const struct kex_curve25519_param *param, const buffer *pub_them,
sign_key *hostkey); sign_key *hostkey);
#endif #endif

14
keyimport.c
View File

@ -55,9 +55,9 @@ static const unsigned char OID_SEC521R1_BLOB[] = {0x2b, 0x81, 0x04, 0x00, 0x23};
((unsigned long)(unsigned char)(cp)[3])) ((unsigned long)(unsigned char)(cp)[3]))
static int openssh_encrypted(const char *filename); static int openssh_encrypted(const char *filename);
static sign_key *openssh_read(const char *filename, char *passphrase); static sign_key *openssh_read(const char *filename, const char *passphrase);
static int openssh_write(const char *filename, sign_key *key, static int openssh_write(const char *filename, sign_key *key,
char *passphrase); const char *passphrase);
static int dropbear_write(const char*filename, sign_key * key); static int dropbear_write(const char*filename, sign_key * key);
static sign_key *dropbear_read(const char* filename); static sign_key *dropbear_read(const char* filename);
@ -83,7 +83,7 @@ int import_encrypted(const char* filename, int filetype) {
return 0; return 0;
} }
sign_key *import_read(const char *filename, char *passphrase, int filetype) { sign_key *import_read(const char *filename, const char *passphrase, int filetype) {
if (filetype == KEYFILE_OPENSSH) { if (filetype == KEYFILE_OPENSSH) {
return openssh_read(filename, passphrase); return openssh_read(filename, passphrase);
@ -97,7 +97,7 @@ sign_key *import_read(const char *filename, char *passphrase, int filetype) {
return NULL; return NULL;
} }
int import_write(const char *filename, sign_key *key, char *passphrase, int import_write(const char *filename, sign_key *key, const char *passphrase,
int filetype) { int filetype) {
if (filetype == KEYFILE_OPENSSH) { if (filetype == KEYFILE_OPENSSH) {
@ -194,7 +194,7 @@ out:
) )
/* cpl has to be less than 100 */ /* cpl has to be less than 100 */
static void base64_encode_fp(FILE * fp, unsigned char *data, static void base64_encode_fp(FILE * fp, const unsigned char *data,
int datalen, int cpl) int datalen, int cpl)
{ {
unsigned char out[100]; unsigned char out[100];
@ -509,7 +509,7 @@ static int openssh_encrypted(const char *filename)
return ret; return ret;
} }
static sign_key *openssh_read(const char *filename, char * UNUSED(passphrase)) static sign_key *openssh_read(const char *filename, const char * UNUSED(passphrase))
{ {
struct openssh_key *key; struct openssh_key *key;
unsigned char *p; unsigned char *p;
@ -828,7 +828,7 @@ static sign_key *openssh_read(const char *filename, char * UNUSED(passphrase))
} }
static int openssh_write(const char *filename, sign_key *key, static int openssh_write(const char *filename, sign_key *key,
char *passphrase) const char *passphrase)
{ {
buffer * keyblob = NULL; buffer * keyblob = NULL;
buffer * extrablob = NULL; /* used for calculated values to write */ buffer * extrablob = NULL; /* used for calculated values to write */

4
keyimport.h
View File

@ -34,9 +34,9 @@ enum {
KEYFILE_SSHCOM KEYFILE_SSHCOM
}; };
int import_write(const char *filename, sign_key *key, char *passphrase, int import_write(const char *filename, sign_key *key, const char *passphrase,
int filetype); int filetype);
sign_key *import_read(const char *filename, char *passphrase, int filetype); sign_key *import_read(const char *filename, const char *passphrase, int filetype);
int import_encrypted(const char* filename, int filetype); int import_encrypted(const char* filename, int filetype);
#endif /* DROPBEAR_KEYIMPORT_H_ */ #endif /* DROPBEAR_KEYIMPORT_H_ */

4
listener.c
View File

@ -53,7 +53,7 @@ void set_listener_fds(fd_set * readfds) {
} }
void handle_listeners(fd_set * readfds) { void handle_listeners(const fd_set * readfds) {
unsigned int i, j; unsigned int i, j;
struct Listener *listener; struct Listener *listener;
@ -76,7 +76,7 @@ void handle_listeners(fd_set * readfds) {
/* acceptor(int fd, void* typedata) is a function to accept connections, /* acceptor(int fd, void* typedata) is a function to accept connections,
* cleanup(void* typedata) happens when cleaning up */ * cleanup(void* typedata) happens when cleaning up */
struct Listener* new_listener(int socks[], unsigned int nsocks, struct Listener* new_listener(const int socks[], unsigned int nsocks,
int type, void* typedata, int type, void* typedata,
void (*acceptor)(struct Listener* listener, int sock), void (*acceptor)(struct Listener* listener, int sock),
void (*cleanup)(struct Listener*)) { void (*cleanup)(struct Listener*)) {

4
listener.h
View File

@ -47,10 +47,10 @@ struct Listener {
}; };
void listeners_initialise(void); void listeners_initialise(void);
void handle_listeners(fd_set * readfds); void handle_listeners(const fd_set * readfds);
void set_listener_fds(fd_set * readfds); void set_listener_fds(fd_set * readfds);
struct Listener* new_listener(int socks[], unsigned int nsocks, struct Listener* new_listener(const int socks[], unsigned int nsocks,
int type, void* typedata, int type, void* typedata,
void (*acceptor)(struct Listener* listener, int sock), void (*acceptor)(struct Listener* listener, int sock),
void (*cleanup)(struct Listener*)); void (*cleanup)(struct Listener*));

4
netio.c
View File

@ -197,7 +197,7 @@ void set_connect_fds(fd_set *writefd) {
} }
} }
void handle_connect_fds(fd_set *writefd) { void handle_connect_fds(const fd_set *writefd) {
m_list_elem *iter; m_list_elem *iter;
TRACE(("enter handle_connect_fds")) TRACE(("enter handle_connect_fds"))
for (iter = ses.conn_pending.first; iter; iter = iter->next) { for (iter = ses.conn_pending.first; iter; iter = iter->next) {
@ -240,7 +240,7 @@ void connect_set_writequeue(struct dropbear_progress_connection *c, struct Queue
c->writequeue = writequeue; c->writequeue = writequeue;
} }
void packet_queue_to_iovec(struct Queue *queue, struct iovec *iov, unsigned int *iov_count) { void packet_queue_to_iovec(const struct Queue *queue, struct iovec *iov, unsigned int *iov_count) {
struct Link *l; struct Link *l;
unsigned int i; unsigned int i;
int len; int len;

4
netio.h
View File

@ -34,7 +34,7 @@ struct dropbear_progress_connection * connect_remote (const char* remotehost, co
/* Sets up for select() */ /* Sets up for select() */
void set_connect_fds(fd_set *writefd); void set_connect_fds(fd_set *writefd);
/* Handles ready sockets after select() */ /* Handles ready sockets after select() */
void handle_connect_fds(fd_set *writefd); void handle_connect_fds(const fd_set *writefd);
/* Cleanup */ /* Cleanup */
void remove_connect_pending(void); void remove_connect_pending(void);
@ -45,7 +45,7 @@ void connect_set_writequeue(struct dropbear_progress_connection *c, struct Queue
/* TODO: writev #ifdef guard */ /* TODO: writev #ifdef guard */
/* Fills out iov which contains iov_count slots, returning the number filled in iov_count */ /* Fills out iov which contains iov_count slots, returning the number filled in iov_count */
void packet_queue_to_iovec(struct Queue *queue, struct iovec *iov, unsigned int *iov_count); void packet_queue_to_iovec(const struct Queue *queue, struct iovec *iov, unsigned int *iov_count);
void packet_queue_consume(struct Queue *queue, ssize_t written); void packet_queue_consume(struct Queue *queue, ssize_t written);
#if DROPBEAR_SERVER_TCP_FAST_OPEN #if DROPBEAR_SERVER_TCP_FAST_OPEN

4
packet.c
View File

@ -49,7 +49,7 @@ static int checkmac(void);
#define ZLIB_COMPRESS_EXPANSION (((RECV_MAX_PAYLOAD_LEN/16384)+1)*5 + 6) #define ZLIB_COMPRESS_EXPANSION (((RECV_MAX_PAYLOAD_LEN/16384)+1)*5 + 6)
#define ZLIB_DECOMPRESS_INCR 1024 #define ZLIB_DECOMPRESS_INCR 1024
#ifndef DISABLE_ZLIB #ifndef DISABLE_ZLIB
static buffer* buf_decompress(buffer* buf, unsigned int len); static buffer* buf_decompress(const buffer* buf, unsigned int len);
static void buf_compress(buffer * dest, buffer * src, unsigned int len); static void buf_compress(buffer * dest, buffer * src, unsigned int len);
#endif #endif
@ -367,7 +367,7 @@ static int checkmac() {
#ifndef DISABLE_ZLIB #ifndef DISABLE_ZLIB
/* returns a pointer to a newly created buffer */ /* returns a pointer to a newly created buffer */
static buffer* buf_decompress(buffer* buf, unsigned int len) { static buffer* buf_decompress(const buffer* buf, unsigned int len) {
int result; int result;
buffer * ret; buffer * ret;

4
queue.c
View File

@ -33,7 +33,7 @@ void initqueue(struct Queue* queue) {
queue->count = 0; queue->count = 0;
} }
int isempty(struct Queue* queue) { int isempty(const struct Queue* queue) {
return (queue->head == NULL); return (queue->head == NULL);
} }
@ -60,7 +60,7 @@ void* dequeue(struct Queue* queue) {
return ret; return ret;
} }
void *examine(struct Queue* queue) { void *examine(const struct Queue* queue) {
dropbear_assert(!isempty(queue)); dropbear_assert(!isempty(queue));
return queue->head->item; return queue->head->item;

4
queue.h
View File

@ -41,9 +41,9 @@ struct Queue {
}; };
void initqueue(struct Queue* queue); void initqueue(struct Queue* queue);
int isempty(struct Queue* queue); int isempty(const struct Queue* queue);
void* dequeue(struct Queue* queue); void* dequeue(struct Queue* queue);
void *examine(struct Queue* queue); void *examine(const struct Queue* queue);
void enqueue(struct Queue* queue, void* item); void enqueue(struct Queue* queue, void* item);
#endif #endif

16
rsa.c
View File

@ -38,8 +38,8 @@
#if DROPBEAR_RSA #if DROPBEAR_RSA
static void rsa_pad_em(dropbear_rsa_key * key, static void rsa_pad_em(const dropbear_rsa_key * key,
buffer *data_buf, mp_int * rsa_em); const buffer *data_buf, mp_int * rsa_em);
/* Load a public rsa key from a buffer, initialising the values. /* Load a public rsa key from a buffer, initialising the values.
* The key will have the same format as buf_put_rsa_key. * The key will have the same format as buf_put_rsa_key.
@ -147,7 +147,7 @@ void rsa_key_free(dropbear_rsa_key *key) {
* mp_int e * mp_int e
* mp_int n * mp_int n
*/ */
void buf_put_rsa_pub_key(buffer* buf, dropbear_rsa_key *key) { void buf_put_rsa_pub_key(buffer* buf, const dropbear_rsa_key *key) {
TRACE(("enter buf_put_rsa_pub_key")) TRACE(("enter buf_put_rsa_pub_key"))
dropbear_assert(key != NULL); dropbear_assert(key != NULL);
@ -161,7 +161,7 @@ void buf_put_rsa_pub_key(buffer* buf, dropbear_rsa_key *key) {
} }
/* Same as buf_put_rsa_pub_key, but with the private "x" key appended */ /* Same as buf_put_rsa_pub_key, but with the private "x" key appended */
void buf_put_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) { void buf_put_rsa_priv_key(buffer* buf, const dropbear_rsa_key *key) {
TRACE(("enter buf_put_rsa_priv_key")) TRACE(("enter buf_put_rsa_priv_key"))
@ -185,7 +185,7 @@ void buf_put_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) {
#if DROPBEAR_SIGNKEY_VERIFY #if DROPBEAR_SIGNKEY_VERIFY
/* Verify a signature in buf, made on data by the key given. /* Verify a signature in buf, made on data by the key given.
* Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
int buf_rsa_verify(buffer * buf, dropbear_rsa_key *key, buffer *data_buf) { int buf_rsa_verify(buffer * buf, const dropbear_rsa_key *key, const buffer *data_buf) {
unsigned int slen; unsigned int slen;
DEF_MP_INT(rsa_s); DEF_MP_INT(rsa_s);
DEF_MP_INT(rsa_mdash); DEF_MP_INT(rsa_mdash);
@ -240,7 +240,7 @@ out:
/* Sign the data presented with key, writing the signature contents /* Sign the data presented with key, writing the signature contents
* to the buffer */ * to the buffer */
void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, buffer *data_buf) { void buf_put_rsa_sign(buffer* buf, const dropbear_rsa_key *key, const buffer *data_buf) {
unsigned int nsize, ssize; unsigned int nsize, ssize;
unsigned int i; unsigned int i;
DEF_MP_INT(rsa_s); DEF_MP_INT(rsa_s);
@ -346,8 +346,8 @@ void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, buffer *data_buf) {
* *
* rsa_em must be a pointer to an initialised mp_int. * rsa_em must be a pointer to an initialised mp_int.
*/ */
static void rsa_pad_em(dropbear_rsa_key * key, static void rsa_pad_em(const dropbear_rsa_key * key,
buffer *data_buf, mp_int * rsa_em) { const buffer *data_buf, mp_int * rsa_em) {
/* ASN1 designator (including the 0x00 preceding) */ /* ASN1 designator (including the 0x00 preceding) */
const unsigned char rsa_asn1_magic[] = const unsigned char rsa_asn1_magic[] =

8
rsa.h
View File

@ -43,14 +43,14 @@ typedef struct {
} dropbear_rsa_key; } dropbear_rsa_key;
void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, buffer *data_buf); void buf_put_rsa_sign(buffer* buf, const dropbear_rsa_key *key, const buffer *data_buf);
#if DROPBEAR_SIGNKEY_VERIFY #if DROPBEAR_SIGNKEY_VERIFY
int buf_rsa_verify(buffer * buf, dropbear_rsa_key *key, buffer *data_buf); int buf_rsa_verify(buffer * buf, const dropbear_rsa_key *key, const buffer *data_buf);
#endif #endif
int buf_get_rsa_pub_key(buffer* buf, dropbear_rsa_key *key); int buf_get_rsa_pub_key(buffer* buf, dropbear_rsa_key *key);
int buf_get_rsa_priv_key(buffer* buf, dropbear_rsa_key *key); int buf_get_rsa_priv_key(buffer* buf, dropbear_rsa_key *key);
void buf_put_rsa_pub_key(buffer* buf, dropbear_rsa_key *key); void buf_put_rsa_pub_key(buffer* buf, const dropbear_rsa_key *key);
void buf_put_rsa_priv_key(buffer* buf, dropbear_rsa_key *key); void buf_put_rsa_priv_key(buffer* buf, const dropbear_rsa_key *key);
void rsa_key_free(dropbear_rsa_key *key); void rsa_key_free(dropbear_rsa_key *key);
#endif /* DROPBEAR_RSA */ #endif /* DROPBEAR_RSA */

12
signkey.c
View File

@ -400,7 +400,7 @@ static char hexdig(unsigned char x) {
/* Since we're not sure if we'll have md5 or sha1, we present both. /* Since we're not sure if we'll have md5 or sha1, we present both.
* MD5 is used in preference, but sha1 could still be useful */ * MD5 is used in preference, but sha1 could still be useful */
#if DROPBEAR_MD5_HMAC #if DROPBEAR_MD5_HMAC
static char * sign_key_md5_fingerprint(unsigned char* keyblob, static char * sign_key_md5_fingerprint(const unsigned char* keyblob,
unsigned int keybloblen) { unsigned int keybloblen) {
char * ret; char * ret;
@ -435,7 +435,7 @@ static char * sign_key_md5_fingerprint(unsigned char* keyblob,
} }
#else /* use SHA1 rather than MD5 for fingerprint */ #else /* use SHA1 rather than MD5 for fingerprint */
static char * sign_key_sha1_fingerprint(unsigned char* keyblob, static char * sign_key_sha1_fingerprint(const unsigned char* keyblob,
unsigned int keybloblen) { unsigned int keybloblen) {
char * ret; char * ret;
@ -472,7 +472,7 @@ static char * sign_key_sha1_fingerprint(unsigned char* keyblob,
/* This will return a freshly malloced string, containing a fingerprint /* This will return a freshly malloced string, containing a fingerprint
* in either sha1 or md5 */ * in either sha1 or md5 */
char * sign_key_fingerprint(unsigned char* keyblob, unsigned int keybloblen) { char * sign_key_fingerprint(const unsigned char* keyblob, unsigned int keybloblen) {
#if DROPBEAR_MD5_HMAC #if DROPBEAR_MD5_HMAC
return sign_key_md5_fingerprint(keyblob, keybloblen); return sign_key_md5_fingerprint(keyblob, keybloblen);
@ -482,7 +482,7 @@ char * sign_key_fingerprint(unsigned char* keyblob, unsigned int keybloblen) {
} }
void buf_put_sign(buffer* buf, sign_key *key, enum signkey_type type, void buf_put_sign(buffer* buf, sign_key *key, enum signkey_type type,
buffer *data_buf) { const buffer *data_buf) {
buffer *sigblob; buffer *sigblob;
sigblob = buf_new(MAX_PUBKEY_SIZE); sigblob = buf_new(MAX_PUBKEY_SIZE);
@ -517,7 +517,7 @@ void buf_put_sign(buffer* buf, sign_key *key, enum signkey_type type,
* If FAILURE is returned, the position of * If FAILURE is returned, the position of
* buf is undefined. If SUCCESS is returned, buf will be positioned after the * buf is undefined. If SUCCESS is returned, buf will be positioned after the
* signature blob */ * signature blob */
int buf_verify(buffer * buf, sign_key *key, buffer *data_buf) { int buf_verify(buffer * buf, sign_key *key, const buffer *data_buf) {
char *type_name = NULL; char *type_name = NULL;
unsigned int type_name_len = 0; unsigned int type_name_len = 0;
@ -570,7 +570,7 @@ int buf_verify(buffer * buf, sign_key *key, buffer *data_buf) {
of the key if it is successfully decoded */ of the key if it is successfully decoded */
int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen, int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen,
const unsigned char* algoname, unsigned int algolen, const unsigned char* algoname, unsigned int algolen,
buffer * line, char ** fingerprint) { const buffer * line, char ** fingerprint) {
buffer * decodekey = NULL; buffer * decodekey = NULL;
int ret = DROPBEAR_FAILURE; int ret = DROPBEAR_FAILURE;

8
signkey.h
View File

@ -90,14 +90,14 @@ int buf_get_priv_key(buffer* buf, sign_key *key, enum signkey_type *type);
void buf_put_pub_key(buffer* buf, sign_key *key, enum signkey_type type); void buf_put_pub_key(buffer* buf, sign_key *key, enum signkey_type type);
void buf_put_priv_key(buffer* buf, sign_key *key, enum signkey_type type); void buf_put_priv_key(buffer* buf, sign_key *key, enum signkey_type type);
void sign_key_free(sign_key *key); void sign_key_free(sign_key *key);
void buf_put_sign(buffer* buf, sign_key *key, enum signkey_type type, buffer *data_buf); void buf_put_sign(buffer* buf, sign_key *key, enum signkey_type type, const buffer *data_buf);
#if DROPBEAR_SIGNKEY_VERIFY #if DROPBEAR_SIGNKEY_VERIFY
int buf_verify(buffer * buf, sign_key *key, buffer *data_buf); int buf_verify(buffer * buf, sign_key *key, const buffer *data_buf);
char * sign_key_fingerprint(unsigned char* keyblob, unsigned int keybloblen); char * sign_key_fingerprint(const unsigned char* keyblob, unsigned int keybloblen);
#endif #endif
int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen, int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen,
const unsigned char* algoname, unsigned int algolen, const unsigned char* algoname, unsigned int algolen,
buffer * line, char ** fingerprint); const buffer * line, char ** fingerprint);
void** signkey_key_ptr(sign_key *key, enum signkey_type type); void** signkey_key_ptr(sign_key *key, enum signkey_type type);

2
svr-agentfwd.c
View File

@ -118,7 +118,7 @@ static void agentaccept(struct Listener *UNUSED(listener), int sock) {
/* set up the environment variable pointing to the socket. This is called /* set up the environment variable pointing to the socket. This is called
* just before command/shell execution, after dropping privileges */ * just before command/shell execution, after dropping privileges */
void svr_agentset(struct ChanSess * chansess) { void svr_agentset(const struct ChanSess * chansess) {
char *path = NULL; char *path = NULL;
int len; int len;

2
svr-auth.c
View File

@ -81,7 +81,7 @@ static void authclear() {
/* Send a banner message if specified to the client. The client might /* Send a banner message if specified to the client. The client might
* ignore this, but possibly serves as a legal "no trespassing" sign */ * ignore this, but possibly serves as a legal "no trespassing" sign */
void send_msg_userauth_banner(buffer *banner) { void send_msg_userauth_banner(const buffer *banner) {
TRACE(("enter send_msg_userauth_banner")) TRACE(("enter send_msg_userauth_banner"))

18
svr-authpubkey.c
View File

@ -70,11 +70,11 @@
#define MIN_AUTHKEYS_LINE 10 /* "ssh-rsa AB" - short but doesn't matter */ #define MIN_AUTHKEYS_LINE 10 /* "ssh-rsa AB" - short but doesn't matter */
#define MAX_AUTHKEYS_LINE 4200 /* max length of a line in authkeys */ #define MAX_AUTHKEYS_LINE 4200 /* max length of a line in authkeys */
static int checkpubkey(char* algo, unsigned int algolen, static int checkpubkey(const char* algo, unsigned int algolen,
unsigned char* keyblob, unsigned int keybloblen); const unsigned char* keyblob, unsigned int keybloblen);
static int checkpubkeyperms(void); static int checkpubkeyperms(void);
static void send_msg_userauth_pk_ok(char* algo, unsigned int algolen, static void send_msg_userauth_pk_ok(const char* algo, unsigned int algolen,
unsigned char* keyblob, unsigned int keybloblen); const unsigned char* keyblob, unsigned int keybloblen);
static int checkfileperm(char * filename); static int checkfileperm(char * filename);
/* process a pubkey auth request, sending success or failure message as /* process a pubkey auth request, sending success or failure message as
@ -173,8 +173,8 @@ out:
/* Reply that the key is valid for auth, this is sent when the user sends /* Reply that the key is valid for auth, this is sent when the user sends
* a straight copy of their pubkey to test, to avoid having to perform * a straight copy of their pubkey to test, to avoid having to perform
* expensive signing operations with a worthless key */ * expensive signing operations with a worthless key */
static void send_msg_userauth_pk_ok(char* algo, unsigned int algolen, static void send_msg_userauth_pk_ok(const char* algo, unsigned int algolen,
unsigned char* keyblob, unsigned int keybloblen) { const unsigned char* keyblob, unsigned int keybloblen) {
TRACE(("enter send_msg_userauth_pk_ok")) TRACE(("enter send_msg_userauth_pk_ok"))
CHECKCLEARTOWRITE(); CHECKCLEARTOWRITE();
@ -188,7 +188,7 @@ static void send_msg_userauth_pk_ok(char* algo, unsigned int algolen,
} }
static int checkpubkey_line(buffer* line, int line_num, char* filename, static int checkpubkey_line(buffer* line, int line_num, const char* filename,
const char* algo, unsigned int algolen, const char* algo, unsigned int algolen,
const unsigned char* keyblob, unsigned int keybloblen) { const unsigned char* keyblob, unsigned int keybloblen) {
buffer *options_buf = NULL; buffer *options_buf = NULL;
@ -292,8 +292,8 @@ out:
/* Checks whether a specified publickey (and associated algorithm) is an /* Checks whether a specified publickey (and associated algorithm) is an
* acceptable key for authentication */ * acceptable key for authentication */
/* Returns DROPBEAR_SUCCESS if key is ok for auth, DROPBEAR_FAILURE otherwise */ /* Returns DROPBEAR_SUCCESS if key is ok for auth, DROPBEAR_FAILURE otherwise */
static int checkpubkey(char* algo, unsigned int algolen, static int checkpubkey(const char* algo, unsigned int algolen,
unsigned char* keyblob, unsigned int keybloblen) { const unsigned char* keyblob, unsigned int keybloblen) {
FILE * authfile = NULL; FILE * authfile = NULL;
char * filename = NULL; char * filename = NULL;

38
svr-chansession.c
View File

@ -43,24 +43,24 @@
static int sessioncommand(struct Channel *channel, struct ChanSess *chansess, static int sessioncommand(struct Channel *channel, struct ChanSess *chansess,
int iscmd, int issubsys); int iscmd, int issubsys);
static int sessionpty(struct ChanSess * chansess); static int sessionpty(struct ChanSess * chansess);
static int sessionsignal(struct ChanSess *chansess); static int sessionsignal(const struct ChanSess *chansess);
static int noptycommand(struct Channel *channel, struct ChanSess *chansess); static int noptycommand(struct Channel *channel, struct ChanSess *chansess);
static int ptycommand(struct Channel *channel, struct ChanSess *chansess); static int ptycommand(struct Channel *channel, struct ChanSess *chansess);
static int sessionwinchange(struct ChanSess *chansess); static int sessionwinchange(const struct ChanSess *chansess);
static void execchild(void *user_data_chansess); static void execchild(void *user_data_chansess);
static void addchildpid(struct ChanSess *chansess, pid_t pid); static void addchildpid(struct ChanSess *chansess, pid_t pid);
static void sesssigchild_handler(int val); static void sesssigchild_handler(int val);
static void closechansess(struct Channel *channel); static void closechansess(struct Channel *channel);
static int newchansess(struct Channel *channel); static int newchansess(struct Channel *channel);
static void chansessionrequest(struct Channel *channel); static void chansessionrequest(struct Channel *channel);
static int sesscheckclose(struct Channel *channel); static int sesscheckclose(const struct Channel *channel);
static void send_exitsignalstatus(struct Channel *channel); static void send_exitsignalstatus(const struct Channel *channel);
static void send_msg_chansess_exitstatus(struct Channel * channel, static void send_msg_chansess_exitstatus(const struct Channel * channel,
struct ChanSess * chansess); const struct ChanSess * chansess);
static void send_msg_chansess_exitsignal(struct Channel * channel, static void send_msg_chansess_exitsignal(const struct Channel * channel,
struct ChanSess * chansess); const struct ChanSess * chansess);
static void get_termmodes(struct ChanSess *chansess); static void get_termmodes(const struct ChanSess *chansess);
const struct ChanType svrchansess = { const struct ChanType svrchansess = {
0, /* sepfds */ 0, /* sepfds */
@ -74,7 +74,7 @@ const struct ChanType svrchansess = {
/* required to clear environment */ /* required to clear environment */
extern char** environ; extern char** environ;
static int sesscheckclose(struct Channel *channel) { static int sesscheckclose(const struct Channel *channel) {
struct ChanSess *chansess = (struct ChanSess*)channel->typedata; struct ChanSess *chansess = (struct ChanSess*)channel->typedata;
TRACE(("sesscheckclose, pid is %d", chansess->exit.exitpid)) TRACE(("sesscheckclose, pid is %d", chansess->exit.exitpid))
return chansess->exit.exitpid != -1; return chansess->exit.exitpid != -1;
@ -159,7 +159,7 @@ static void sesssigchild_handler(int UNUSED(dummy)) {
} }
/* send the exit status or the signal causing termination for a session */ /* send the exit status or the signal causing termination for a session */
static void send_exitsignalstatus(struct Channel *channel) { static void send_exitsignalstatus(const struct Channel *channel) {
struct ChanSess *chansess = (struct ChanSess*)channel->typedata; struct ChanSess *chansess = (struct ChanSess*)channel->typedata;
@ -173,8 +173,8 @@ static void send_exitsignalstatus(struct Channel *channel) {
} }
/* send the exitstatus to the client */ /* send the exitstatus to the client */
static void send_msg_chansess_exitstatus(struct Channel * channel, static void send_msg_chansess_exitstatus(const struct Channel * channel,
struct ChanSess * chansess) { const struct ChanSess * chansess) {
dropbear_assert(chansess->exit.exitpid != -1); dropbear_assert(chansess->exit.exitpid != -1);
dropbear_assert(chansess->exit.exitsignal == -1); dropbear_assert(chansess->exit.exitsignal == -1);
@ -192,8 +192,8 @@ static void send_msg_chansess_exitstatus(struct Channel * channel,
} }
/* send the signal causing the exit to the client */ /* send the signal causing the exit to the client */
static void send_msg_chansess_exitsignal(struct Channel * channel, static void send_msg_chansess_exitsignal(const struct Channel * channel,
struct ChanSess * chansess) { const struct ChanSess * chansess) {
int i; int i;
char* signame = NULL; char* signame = NULL;
@ -273,7 +273,7 @@ static int newchansess(struct Channel *channel) {
} }
static struct logininfo* static struct logininfo*
chansess_login_alloc(struct ChanSess *chansess) { chansess_login_alloc(const struct ChanSess *chansess) {
struct logininfo * li; struct logininfo * li;
li = login_alloc_entry(chansess->pid, ses.authstate.username, li = login_alloc_entry(chansess->pid, ses.authstate.username,
svr_ses.remotehost, chansess->tty); svr_ses.remotehost, chansess->tty);
@ -403,7 +403,7 @@ out:
/* Send a signal to a session's process as requested by the client*/ /* Send a signal to a session's process as requested by the client*/
static int sessionsignal(struct ChanSess *chansess) { static int sessionsignal(const struct ChanSess *chansess) {
int sig = 0; int sig = 0;
char* signame = NULL; char* signame = NULL;
@ -441,7 +441,7 @@ static int sessionsignal(struct ChanSess *chansess) {
/* Let the process know that the window size has changed, as notified from the /* Let the process know that the window size has changed, as notified from the
* client. Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ * client. Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
static int sessionwinchange(struct ChanSess *chansess) { static int sessionwinchange(const struct ChanSess *chansess) {
int termc, termr, termw, termh; int termc, termr, termw, termh;
@ -460,7 +460,7 @@ static int sessionwinchange(struct ChanSess *chansess) {
return DROPBEAR_SUCCESS; return DROPBEAR_SUCCESS;
} }
static void get_termmodes(struct ChanSess *chansess) { static void get_termmodes(const struct ChanSess *chansess) {
struct termios termio; struct termios termio;
unsigned char opcode; unsigned char opcode;

6
svr-x11fwd.c
View File

@ -40,7 +40,7 @@
static void x11accept(struct Listener* listener, int sock); static void x11accept(struct Listener* listener, int sock);
static int bindport(int fd); static int bindport(int fd);
static int send_msg_channel_open_x11(int fd, struct sockaddr_in* addr); static int send_msg_channel_open_x11(int fd, const struct sockaddr_in* addr);
/* Check untrusted xauth strings for metacharacters */ /* Check untrusted xauth strings for metacharacters */
/* Returns DROPBEAR_SUCCESS/DROPBEAR_FAILURE */ /* Returns DROPBEAR_SUCCESS/DROPBEAR_FAILURE */
@ -154,7 +154,7 @@ static void x11accept(struct Listener* listener, int sock) {
/* This is called after switching to the user, and sets up the xauth /* This is called after switching to the user, and sets up the xauth
* and environment variables. */ * and environment variables. */
void x11setauth(struct ChanSess *chansess) { void x11setauth(const struct ChanSess *chansess) {
char display[20]; /* space for "localhost:12345.123" */ char display[20]; /* space for "localhost:12345.123" */
FILE * authprog = NULL; FILE * authprog = NULL;
@ -220,7 +220,7 @@ static const struct ChanType chan_x11 = {
}; };
static int send_msg_channel_open_x11(int fd, struct sockaddr_in* addr) { static int send_msg_channel_open_x11(int fd, const struct sockaddr_in* addr) {
char* ipstring = NULL; char* ipstring = NULL;

2
x11fwd.h
View File

@ -30,7 +30,7 @@
#include "channel.h" #include "channel.h"
int x11req(struct ChanSess * chansess); int x11req(struct ChanSess * chansess);
void x11setauth(struct ChanSess *chansess); void x11setauth(const struct ChanSess *chansess);
void x11cleanup(struct ChanSess *chansess); void x11cleanup(struct ChanSess *chansess);
#endif /* DROPBEAR_X11FWD */ #endif /* DROPBEAR_X11FWD */