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BUG/MINOR: cfgparse/proxy: Hande allocation errors during proxy section parsing

Browse Source 
At several places during the proxy section parsing, memory allocation was
performed with no check. Result is now tested and an error is returned if
the allocation fails.

This patch may be backported to all stable version but it only fixes
allocation errors during configuration parsing. Thus, it is not mandatory.
This commit is contained in:
Christopher Faulet 2021-04-12 18:46:52 +02:00
parent 0c6d1dcf7d
commit b45a7d4b74
1 changed files with 151 additions and 7 deletions
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158
src/cfgparse-listen.c
View File

@ -496,6 +496,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
free(curproxy->monitor_uri);
curproxy->monitor_uri_len = strlen(args[1]);
curproxy->monitor_uri = calloc(1, curproxy->monitor_uri_len + 1);
if (!curproxy->monitor_uri) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
memcpy(curproxy->monitor_uri, args[1], curproxy->monitor_uri_len);
curproxy->monitor_uri[curproxy->monitor_uri_len] = '\0';
@ -581,6 +586,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
len += strlen(args[i]) + 1;
d = calloc(1, len);
if (!d) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->desc = d;
d += snprintf(d, curproxy->desc + len - d, "%s", args[1]);
@ -678,6 +688,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
ha_free(&curproxy->cookie_domain);
free(curproxy->cookie_name);
curproxy->cookie_name = strdup(args[1]);
if (!curproxy->cookie_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->cookie_len = strlen(curproxy->cookie_name);
cur_arg = 2;
@ -740,14 +755,15 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
* building the string which will be returned along with
* the cookie.
*/
char *new_ptr;
int new_len = strlen(curproxy->cookie_domain) +
strlen("; domain=") + strlen(args[cur_arg + 1]) + 1;
new_ptr = malloc(new_len);
snprintf(new_ptr, new_len, "%s; domain=%s", curproxy->cookie_domain, args[cur_arg+1]);
free(curproxy->cookie_domain);
curproxy->cookie_domain = new_ptr;
memprintf(&curproxy->cookie_domain, "%s; domain=%s", curproxy->cookie_domain, args[cur_arg+1]);
}
if (!curproxy->cookie_domain) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
cur_arg++;
}
else if (strcmp(args[cur_arg], "maxidle") == 0) {
@ -846,6 +862,12 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
curproxy->cookie_attrs = strdup(args[cur_arg + 1]);
else
memprintf(&curproxy->cookie_attrs, "%s; %s", curproxy->cookie_attrs, args[cur_arg + 1]);
if (!curproxy->cookie_attrs) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
cur_arg++;
}
@ -892,6 +914,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
}
free(curproxy->email_alert.from);
curproxy->email_alert.from = strdup(args[2]);
if (!curproxy->email_alert.from) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
else if (strcmp(args[1], "mailers") == 0) {
if (*(args[1]) == 0) {
@ -902,6 +929,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
}
free(curproxy->email_alert.mailers.name);
curproxy->email_alert.mailers.name = strdup(args[2]);
if (!curproxy->email_alert.mailers.name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
else if (strcmp(args[1], "myhostname") == 0) {
if (*(args[1]) == 0) {
@ -912,6 +944,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
}
free(curproxy->email_alert.myhostname);
curproxy->email_alert.myhostname = strdup(args[2]);
if (!curproxy->email_alert.myhostname) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
else if (strcmp(args[1], "level") == 0) {
curproxy->email_alert.level = get_log_level(args[2]);
@ -931,6 +968,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
}
free(curproxy->email_alert.to);
curproxy->email_alert.to = strdup(args[2]);
if (!curproxy->email_alert.to) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
else {
ha_alert("parsing [%s:%d] : email-alert: unknown argument '%s'.\n",
@ -970,11 +1012,21 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
free(curproxy->rdp_cookie_name);
curproxy->rdp_cookie_name = my_strndup(beg, end - beg);
if (!curproxy->rdp_cookie_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->rdp_cookie_len = end-beg;
}
else if (*(args[1] + 10) == '\0') { /* default cookie name 'msts' */
free(curproxy->rdp_cookie_name);
curproxy->rdp_cookie_name = strdup("msts");
if (!curproxy->rdp_cookie_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->rdp_cookie_len = strlen(curproxy->rdp_cookie_name);
}
else { /* syntax */
@ -1027,6 +1079,12 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
curproxy->server_state_file_name = strdup(curproxy->id);
else
curproxy->server_state_file_name = strdup(args[1]);
if (!curproxy->server_state_file_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
}
else if (strcmp(args[0], "max-session-srv-conns") == 0) {
if (warnifnotcap(curproxy, PR_CAP_FE, file, linenum, args[0], NULL))
@ -1061,6 +1119,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
}
free(curproxy->capture_name);
curproxy->capture_name = strdup(args[2]);
if (!curproxy->capture_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->capture_namelen = strlen(curproxy->capture_name);
curproxy->capture_len = atol(args[4]);
curproxy->to_log |= LW_COOKIE;
@ -1085,11 +1148,24 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
}
hdr = calloc(1, sizeof(*hdr));
if (!hdr)
goto req_caphdr_alloc_error;
hdr->next = curproxy->req_cap;
hdr->name = strdup(args[3]);
if (!hdr->name)
goto req_caphdr_alloc_error;
hdr->namelen = strlen(args[3]);
hdr->len = atol(args[5]);
hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
if (!hdr->pool) {
req_caphdr_alloc_error:
if (hdr)
ha_free(&hdr->name);
ha_free(&hdr);
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
hdr->index = curproxy->nb_req_cap++;
curproxy->req_cap = hdr;
curproxy->to_log |= LW_REQHDR;
@ -1113,11 +1189,24 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
goto out;
}
hdr = calloc(1, sizeof(*hdr));
if (!hdr)
goto res_caphdr_alloc_error;
hdr->next = curproxy->rsp_cap;
hdr->name = strdup(args[3]);
if (!hdr->name)
goto res_caphdr_alloc_error;
hdr->namelen = strlen(args[3]);
hdr->len = atol(args[5]);
hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
if (!hdr->pool) {
res_caphdr_alloc_error:
if (hdr)
ha_free(&hdr->name);
ha_free(&hdr);
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
hdr->index = curproxy->nb_rsp_cap++;
curproxy->rsp_cap = hdr;
curproxy->to_log |= LW_RSPHDR;
@ -1250,6 +1339,11 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
/* set the desired header name, in lower case */
free(curproxy->server_id_hdr_name);
curproxy->server_id_hdr_name = strdup(args[1]);
if (!curproxy->server_id_hdr_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->server_id_hdr_len = strlen(curproxy->server_id_hdr_name);
ist2bin_lc(curproxy->server_id_hdr_name, ist2(curproxy->server_id_hdr_name, curproxy->server_id_hdr_len));
}
@ -2197,6 +2291,11 @@ stats_error_parsing:
free(curproxy->fwdfor_hdr_name);
curproxy->fwdfor_hdr_name = strdup(DEF_XFORWARDFOR_HDR);
if (!curproxy->fwdfor_hdr_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->fwdfor_hdr_len = strlen(DEF_XFORWARDFOR_HDR);
curproxy->except_xff_net.family = AF_UNSPEC;
@ -2238,6 +2337,11 @@ stats_error_parsing:
}
free(curproxy->fwdfor_hdr_name);
curproxy->fwdfor_hdr_name = strdup(args[cur_arg+1]);
if (!curproxy->fwdfor_hdr_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->fwdfor_hdr_len = strlen(curproxy->fwdfor_hdr_name);
cur_arg += 2;
} else if (strcmp(args[cur_arg], "if-none") == 0) {
@ -2263,6 +2367,11 @@ stats_error_parsing:
free(curproxy->orgto_hdr_name);
curproxy->orgto_hdr_name = strdup(DEF_XORIGINALTO_HDR);
if (!curproxy->orgto_hdr_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->orgto_hdr_len = strlen(DEF_XORIGINALTO_HDR);
curproxy->except_xot_net.family = AF_UNSPEC;
@ -2303,6 +2412,11 @@ stats_error_parsing:
}
free(curproxy->orgto_hdr_name);
curproxy->orgto_hdr_name = strdup(args[cur_arg+1]);
if (!curproxy->orgto_hdr_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->orgto_hdr_len = strlen(curproxy->orgto_hdr_name);
cur_arg += 2;
} else {
@ -2338,6 +2452,11 @@ stats_error_parsing:
}
free(curproxy->defbe.name);
curproxy->defbe.name = strdup(args[1]);
if (!curproxy->defbe.name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
if (alertif_too_many_args_idx(1, 0, file, linenum, args, &err_code))
goto out;
@ -2629,6 +2748,11 @@ stats_error_parsing:
}
free(curproxy->conf.uniqueid_format_string);
curproxy->conf.uniqueid_format_string = strdup(args[1]);
if (!curproxy->conf.uniqueid_format_string) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
free(curproxy->conf.uif_file);
curproxy->conf.uif_file = strdup(curproxy->conf.args.file);
@ -2681,6 +2805,11 @@ stats_error_parsing:
curproxy->conf.logformat_string != clf_http_log_format)
free(curproxy->conf.logformat_string);
curproxy->conf.logformat_string = strdup(args[1]);
if (!curproxy->conf.logformat_string) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
free(curproxy->conf.lfs_file);
curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
@ -2710,6 +2839,11 @@ stats_error_parsing:
if (curproxy->conf.logformat_sd_string != default_rfc5424_sd_log_format)
free(curproxy->conf.logformat_sd_string);
curproxy->conf.logformat_sd_string = strdup(args[1]);
if (!curproxy->conf.logformat_sd_string) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
free(curproxy->conf.lfsd_file);
curproxy->conf.lfsd_file = strdup(curproxy->conf.args.file);
@ -2810,6 +2944,11 @@ stats_error_parsing:
curproxy->conn_src.opts |= CO_SRC_TPROXY_DYN;
free(curproxy->conn_src.bind_hdr_name);
curproxy->conn_src.bind_hdr_name = calloc(1, end - name + 1);
if (!curproxy->conn_src.bind_hdr_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->conn_src.bind_hdr_len = end - name;
memcpy(curproxy->conn_src.bind_hdr_name, name, end - name);
curproxy->conn_src.bind_hdr_name[end-name] = '\0';
@ -2871,6 +3010,11 @@ stats_error_parsing:
}
free(curproxy->conn_src.iface_name);
curproxy->conn_src.iface_name = strdup(args[cur_arg + 1]);
if (!curproxy->conn_src.iface_name) {
ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
curproxy->conn_src.iface_len = strlen(curproxy->conn_src.iface_name);
global.last_checks |= LSTCHK_NETADM;
#else