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More strcpy / snprintf as part of rgagnon's audit (bug #2004) 

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@3410 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
markster 2004-07-09 10:08:09 +00:00
parent a2741a5731
commit 6d161f1588
8 changed files with 32 additions and 27 deletions
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4
app.c
View File

@ -157,7 +157,7 @@ int ast_app_has_voicemail(const char *mailbox)
if (ast_strlen_zero(mailbox))
return 0;
if (strchr(mailbox, ',')) {
strncpy(tmp, mailbox, sizeof(tmp));
strncpy(tmp, mailbox, sizeof(tmp) - 1);
mb = tmp;
ret = 0;
while((cur = strsep(&mb, ","))) {
@ -207,7 +207,7 @@ int ast_app_messagecount(const char *mailbox, int *newmsgs, int *oldmsgs)
return 0;
if (strchr(mailbox, ',')) {
int tmpnew, tmpold;
strncpy(tmp, mailbox, sizeof(tmp));
strncpy(tmp, mailbox, sizeof(tmp) - 1);
mb = tmp;
ret = 0;
while((cur = strsep(&mb, ", "))) {

26
asterisk.c
View File

@ -943,10 +943,10 @@ static char *cli_prompt(EditLine *el)
case 'C': /* color */
t++;
if (sscanf(t, "%d;%d%n", &fgcolor, &bgcolor, &i) == 2) {
strncat(p, term_color_code(term_code, fgcolor, bgcolor, sizeof(term_code)),sizeof(prompt) - strlen(prompt));
strncat(p, term_color_code(term_code, fgcolor, bgcolor, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
t += i - 1;
} else if (sscanf(t, "%d%n", &fgcolor, &i) == 1) {
strncat(p, term_color_code(term_code, fgcolor, 0, sizeof(term_code)),sizeof(prompt) - strlen(prompt));
strncat(p, term_color_code(term_code, fgcolor, 0, sizeof(term_code)),sizeof(prompt) - strlen(prompt) - 1);
t += i - 1;
}
@ -966,9 +966,9 @@ static char *cli_prompt(EditLine *el)
break;
case 'h': /* hostname */
if (!gethostname(hostname, sizeof(hostname) - 1)) {
strncat(p, hostname, sizeof(prompt) - strlen(prompt));
strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
} else {
strncat(p, "localhost", sizeof(prompt) - strlen(prompt));
strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
}
break;
case 'H': /* short hostname */
@ -979,9 +979,9 @@ static char *cli_prompt(EditLine *el)
break;
}
}
strncat(p, hostname, sizeof(prompt) - strlen(prompt));
strncat(p, hostname, sizeof(prompt) - strlen(prompt) - 1);
} else {
strncat(p, "localhost", sizeof(prompt) - strlen(prompt));
strncat(p, "localhost", sizeof(prompt) - strlen(prompt) - 1);
}
break;
#ifdef linux
@ -1023,13 +1023,13 @@ static char *cli_prompt(EditLine *el)
break;
case '#': /* process console or remote? */
if (! option_remote) {
strncat(p, "#", sizeof(prompt) - strlen(prompt));
strncat(p, "#", sizeof(prompt) - strlen(prompt) - 1);
} else {
strncat(p, ">", sizeof(prompt) - strlen(prompt));
strncat(p, ">", sizeof(prompt) - strlen(prompt) - 1);
}
break;
case '%': /* literal % */
strncat(p, "%", sizeof(prompt) - strlen(prompt));
strncat(p, "%", sizeof(prompt) - strlen(prompt) - 1);
break;
case '\0': /* % is last character - prevent bug */
t--;
@ -1462,14 +1462,14 @@ static void ast_readconfig(void) {
strncpy((char *)ast_config_AST_SPOOL_DIR,v->value,sizeof(ast_config_AST_SPOOL_DIR)-1);
} else if (!strcasecmp(v->name, "astvarlibdir")) {
strncpy((char *)ast_config_AST_VAR_DIR,v->value,sizeof(ast_config_AST_VAR_DIR)-1);
snprintf((char *)ast_config_AST_DB,sizeof(ast_config_AST_DB)-1,"%s/%s",v->value,"astdb");
snprintf((char *)ast_config_AST_DB,sizeof(ast_config_AST_DB),"%s/%s",v->value,"astdb");
} else if (!strcasecmp(v->name, "astlogdir")) {
strncpy((char *)ast_config_AST_LOG_DIR,v->value,sizeof(ast_config_AST_LOG_DIR)-1);
} else if (!strcasecmp(v->name, "astagidir")) {
strncpy((char *)ast_config_AST_AGI_DIR,v->value,sizeof(ast_config_AST_AGI_DIR)-1);
} else if (!strcasecmp(v->name, "astrundir")) {
snprintf((char *)ast_config_AST_PID,sizeof(ast_config_AST_PID)-1,"%s/%s",v->value,"asterisk.pid");
snprintf((char *)ast_config_AST_SOCKET,sizeof(ast_config_AST_SOCKET)-1,"%s/%s",v->value,"asterisk.ctl");
snprintf((char *)ast_config_AST_PID,sizeof(ast_config_AST_PID),"%s/%s",v->value,"asterisk.pid");
snprintf((char *)ast_config_AST_SOCKET,sizeof(ast_config_AST_SOCKET),"%s/%s",v->value,"asterisk.ctl");
strncpy((char *)ast_config_AST_RUN_DIR,v->value,sizeof(ast_config_AST_RUN_DIR)-1);
} else if (!strcasecmp(v->name, "astmoddir")) {
strncpy((char *)ast_config_AST_MODULE_DIR,v->value,sizeof(ast_config_AST_MODULE_DIR)-1);
@ -1564,7 +1564,7 @@ int main(int argc, char *argv[])
xarg = optarg;
break;
case 'C':
strncpy((char *)ast_config_AST_CONFIG_FILE,optarg,sizeof(ast_config_AST_CONFIG_FILE));
strncpy((char *)ast_config_AST_CONFIG_FILE,optarg,sizeof(ast_config_AST_CONFIG_FILE) - 1);
option_overrideconfig++;
break;
case 'i':

4
callerid.c
View File

@ -242,8 +242,8 @@ int callerid_feed(struct callerid_state *cid, unsigned char *ubuf, int len, int
break;
}
strcpy(cid->number, "");
strcpy(cid->name, "");
cid->number[0] = '\0';
cid->name[0] = '\0';
/* If we get this far we're fine. */
if (cid->type == 0x80) {
/* MDMF */

2
cdr.c
View File

@ -431,7 +431,7 @@ int ast_cdr_update(struct ast_channel *c)
if (c->callerid && !ast_strlen_zero(c->callerid))
strncpy(cdr->clid, c->callerid, sizeof(cdr->clid) - 1);
else
strcpy(cdr->clid, "");
cdr->clid[0] = '\0';
name = NULL;
num = NULL;
ast_callerid_parse(tmp, &name, &num);

2
channel.c
View File

@ -2143,7 +2143,7 @@ int ast_channel_masquerade(struct ast_channel *original, struct ast_channel *clo
void ast_change_name(struct ast_channel *chan, char *newname)
{
char tmp[256];
strncpy(tmp, chan->name, 256);
strncpy(tmp, chan->name, sizeof(tmp) - 1);
strncpy(chan->name, newname, sizeof(chan->name) - 1);
manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", tmp, chan->name, chan->uniqueid);
}

3
channels/chan_zap.c
View File

@ -611,6 +611,9 @@ static int hangup_pri2cause(int cause)
case PRI_CAUSE_UNALLOCATED:
case PRI_CAUSE_NUMBER_CHANGED:
return AST_CAUSE_UNALLOCATED;
case PRI_CAUSE_NO_USER_RESPONSE:
case PRI_CAUSE_NO_ANSWER:
return AST_CAUSE_NO_ANSWER;
default:
return AST_CAUSE_FAILURE;
}

11
config.c
View File

@ -319,7 +319,7 @@ struct ast_variable *ast_variable_append_modify(struct ast_config *config, char
if (!cat)
return NULL;
memset(cat, 0, sizeof(struct ast_category));
strncpy(cat->name, category, sizeof(cat->name));
strncpy(cat->name, category, sizeof(cat->name) - 1);
if (config->root) {
/* Put us at the end */
pcat = config->root;
@ -646,7 +646,7 @@ int ast_save(char *configfile, struct ast_config *cfg, char *generator)
{
FILE *f;
char fn[256];
char date[256];
char date[256]="";
time_t t;
struct ast_variable *var;
struct ast_category *cat;
@ -657,7 +657,7 @@ int ast_save(char *configfile, struct ast_config *cfg, char *generator)
snprintf(fn, sizeof(fn), "%s/%s", AST_CONFIG_DIR, configfile);
}
time(&t);
strncpy(date, ctime(&t), sizeof(date));
strncpy(date, ctime(&t), sizeof(date) - 1);
if ((f = fopen(fn, "w"))) {
if ((option_verbose > 1) && !option_debug)
ast_verbose( VERBOSE_PREFIX_2 "Saving '%s': ", fn);
@ -974,7 +974,7 @@ struct ast_category *ast_new_category(char *name)
category = malloc(sizeof(struct ast_category));
if (category) {
memset(category,0,sizeof(struct ast_category));
strncpy(category->name,name,sizeof(category->name));
strncpy(category->name,name,sizeof(category->name) - 1);
}
return category;
}
@ -1082,7 +1082,8 @@ int read_ast_cust_config(void)
if (strcmp(v->name,config_conf_file) && strcmp(v->name,"asterisk.conf")) {
if (!(test = get_ast_cust_config_keyword(v->name))) {
ast_log(LOG_NOTICE,"Binding: %s to %s\n",v->name,v->value);
strncpy(ptr->keywords[ptr->keycount],v->name,sizeof(ptr->keywords[ptr->keycount]));
strncpy(ptr->keywords[ptr->keycount],v->name,sizeof(ptr->keywords[ptr->keycount]) - 1);
ptr->keywords[ptr->keycount][sizeof(ptr->keywords[ptr->keycount])-1] = '\0';
ptr->keycount++;
}
} else {

7
db.c
View File

@ -84,7 +84,7 @@ int ast_db_deltree(const char *family, const char *keytree)
} else if (keytree)
return -1;
else
strcpy(prefix, "");
prefix[0] = '\0';
ast_mutex_lock(&dblock);
if (dbinit())
@ -169,6 +169,7 @@ int ast_db_get(const char *family, const char *keys, char *value, int valuelen)
((char *)data.data)[data.size - 1] = '\0';
/* Make sure that we don't write too much to the dst pointer or we don't read too much from the source pointer */
strncpy(value, data.data, (valuelen > data.size) ? data.size : valuelen);
value[valuelen - 1] = '\0';
} else {
ast_log(LOG_NOTICE, "Strange, empty value for /%s/%s\n", family, keys);
}
@ -275,7 +276,7 @@ static int database_show(int fd, int argc, char *argv[])
snprintf(prefix, sizeof(prefix), "/%s", argv[2]);
} else if (argc == 2) {
/* Neither */
strcpy(prefix, "");
prefix[0] = '\0';
} else
return RESULT_SHOWUSAGE;
ast_mutex_lock(&dblock);
@ -324,7 +325,7 @@ struct ast_db_entry *ast_db_gettree(const char *family, const char *keytree)
/* Family only */
snprintf(prefix, sizeof(prefix), "/%s", family);
} else
strcpy(prefix, "");
prefix[0] = '\0';
ast_mutex_lock(&dblock);
if (dbinit()) {
ast_mutex_unlock(&dblock);