security_events: Fix error caused by DTD validation error
[asterisk/asterisk.git] / res / res_limit.c
index d8fe851..e883ff3 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Asterisk -- A telephony toolkit for Linux.
+ * Asterisk -- An open source telephony toolkit.
  *
  * Resource limits
  * 
  * \author Tilghman Lesher <res_limit_200607@the-tilghman.com>
  */
 
+/*** MODULEINFO
+       <support_level>core</support_level>
+ ***/
 
 #include "asterisk.h"
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#define _XOPEN_SOURCE 600
-#include <string.h>
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
 #include <ctype.h>
 #include <sys/time.h>
 #include <sys/resource.h>
-#include <errno.h>
 #include "asterisk/module.h"
 #include "asterisk/cli.h"
 
 #endif
 #endif
 
-static struct limits {
+static const struct limits {
        int resource;
        char limit[3];
        char desc[40];
+       char clicmd[15];
 } limits[] = {
-       { RLIMIT_CPU, "-t", "cpu time" },
-       { RLIMIT_FSIZE, "-f", "file size" },
-       { RLIMIT_DATA, "-d", "program data segment" },
-       { RLIMIT_STACK, "-s", "program stack size" },
-       { RLIMIT_CORE, "-c", "core file size" },
+       { RLIMIT_CPU,     "-t", "cpu time", "time" },
+       { RLIMIT_FSIZE,   "-f", "file size" , "file" },
+       { RLIMIT_DATA,    "-d", "program data segment", "data" },
+       { RLIMIT_STACK,   "-s", "program stack size", "stack" },
+       { RLIMIT_CORE,    "-c", "core file size", "core" },
 #ifdef RLIMIT_RSS
-       { RLIMIT_RSS, "-m", "resident memory" },
-       { RLIMIT_MEMLOCK, "-l", "amount of memory locked into RAM" },
+       { RLIMIT_RSS,     "-m", "resident memory", "memory" },
+       { RLIMIT_MEMLOCK, "-l", "amount of memory locked into RAM", "locked" },
 #endif
 #ifdef RLIMIT_NPROC
-       { RLIMIT_NPROC, "-u", "number of processes" },
+       { RLIMIT_NPROC,   "-u", "number of processes", "processes" },
 #endif
-       { RLIMIT_NOFILE, "-n", "number of file descriptors" },
+       { RLIMIT_NOFILE,  "-n", "number of file descriptors", "descriptors" },
 #ifdef VMEM_DEF
-       { VMEM_DEF, "-v", "virtual memory" },
+       { VMEM_DEF,       "-v", "virtual memory", "virtual" },
 #endif
 };
 
 static int str2limit(const char *string)
 {
        size_t i;
-       for (i = 0; i < sizeof(limits) / sizeof(limits[0]); i++) {
-               if (!strcasecmp(string, limits[i].limit))
+       for (i = 0; i < ARRAY_LEN(limits); i++) {
+               if (!strcasecmp(string, limits[i].clicmd))
                        return limits[i].resource;
        }
        return -1;
@@ -78,50 +78,112 @@ static int str2limit(const char *string)
 static const char *str2desc(const char *string)
 {
        size_t i;
-       for (i = 0; i < sizeof(limits) / sizeof(limits[0]); i++) {
-               if (!strcmp(string, limits[i].limit))
+       for (i = 0; i < ARRAY_LEN(limits); i++) {
+               if (!strcmp(string, limits[i].clicmd))
                        return limits[i].desc;
        }
        return "<unknown>";
 }
 
-static int my_ulimit(int fd, int argc, char **argv)
+static char *complete_ulimit(struct ast_cli_args *a)
+{
+       int which = 0, i;
+       int wordlen = strlen(a->word);
+
+       if (a->pos > 1)
+               return NULL;
+       for (i = 0; i < ARRAY_LEN(limits); i++) {
+               if (!strncasecmp(limits[i].clicmd, a->word, wordlen)) {
+                       if (++which > a->n)
+                               return ast_strdup(limits[i].clicmd);
+               }
+       }
+       return NULL;
+}
+
+static char *handle_cli_ulimit(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 {
        int resource;
        struct rlimit rlimit = { 0, 0 };
-       if (argc > 3)
-               return RESULT_SHOWUSAGE;
-
-       if (argc == 1) {
-               char arg2[3];
-               char *newargv[2] = { "ulimit", arg2 };
-               for (resource = 0; resource < sizeof(limits) / sizeof(limits[0]); resource++) {
-                       ast_copy_string(arg2, limits[resource].limit, sizeof(arg2));
-                       my_ulimit(fd, 2, newargv);
+
+       switch (cmd) {
+       case CLI_INIT:
+               e->command = "ulimit";
+               e->usage =
+                       "Usage: ulimit {data|"
+#ifdef RLIMIT_RSS
+                       "limit|"
+#endif
+                       "file|"
+#ifdef RLIMIT_RSS
+                       "memory|"
+#endif
+                       "stack|time|"
+#ifdef RLIMIT_NPROC
+                       "processes|"
+#endif
+#ifdef VMEM_DEF
+                       "virtual|"
+#endif
+                       "core|descriptors} [<num>]\n"
+                       "       Shows or sets the corresponding resource limit.\n"
+                       "         data          Process data segment [readonly]\n"
+#ifdef RLIMIT_RSS
+                       "         lock          Memory lock size [readonly]\n"
+#endif
+                       "         file          File size\n"
+#ifdef RLIMIT_RSS
+                       "         memory        Process resident memory [readonly]\n"
+#endif
+                       "         stack         Process stack size [readonly]\n"
+                       "         time          CPU usage [readonly]\n"
+#ifdef RLIMIT_NPROC
+                       "         processes     Child processes\n"
+#endif
+#ifdef VMEM_DEF
+                       "         virtual       Process virtual memory [readonly]\n"
+#endif
+                       "         core          Core dump file size\n"
+                       "         descriptors   Number of file descriptors\n";
+               return NULL;
+       case CLI_GENERATE:
+               return complete_ulimit(a);
+       }
+
+       if (a->argc > 3)
+               return CLI_SHOWUSAGE;
+
+       if (a->argc == 1) {
+               char arg2[15];
+               const char * const newargv[2] = { "ulimit", arg2 };
+               for (resource = 0; resource < ARRAY_LEN(limits); resource++) {
+                       struct ast_cli_args newArgs = { .argv = newargv, .argc = 2 };
+                       ast_copy_string(arg2, limits[resource].clicmd, sizeof(arg2));
+                       handle_cli_ulimit(e, CLI_HANDLER, &newArgs);
                }
-               return RESULT_SUCCESS;
+               return CLI_SUCCESS;
        } else {
-               resource = str2limit(argv[1]);
+               resource = str2limit(a->argv[1]);
                if (resource == -1) {
-                       ast_cli(fd, "Unknown resource\n");
-                       return RESULT_FAILURE;
+                       ast_cli(a->fd, "Unknown resource\n");
+                       return CLI_FAILURE;
                }
 
-               if (argc == 3) {
+               if (a->argc == 3) {
                        int x;
 #ifdef RLIMIT_NPROC
                        if (resource != RLIMIT_NOFILE && resource != RLIMIT_CORE && resource != RLIMIT_NPROC && resource != RLIMIT_FSIZE) {
 #else
-                         if (resource != RLIMIT_NOFILE && resource != RLIMIT_CORE && resource != RLIMIT_FSIZE) {
+                       if (resource != RLIMIT_NOFILE && resource != RLIMIT_CORE && resource != RLIMIT_FSIZE) {
 #endif
-                               ast_cli(fd, "Resource not permitted to be set\n");
-                               return RESULT_FAILURE;
+                               ast_cli(a->fd, "Resource not permitted to be set\n");
+                               return CLI_FAILURE;
                        }
 
-                       sscanf(argv[2], "%d", &x);
+                       sscanf(a->argv[2], "%30d", &x);
                        rlimit.rlim_max = rlimit.rlim_cur = x;
                        setrlimit(resource, &rlimit);
-                       return RESULT_SUCCESS;
+                       return CLI_SUCCESS;
                } else {
                        if (!getrlimit(resource, &rlimit)) {
                                char printlimit[32];
@@ -129,51 +191,18 @@ static int my_ulimit(int fd, int argc, char **argv)
                                if (rlimit.rlim_max == RLIM_INFINITY)
                                        ast_copy_string(printlimit, "effectively unlimited", sizeof(printlimit));
                                else
-                                       snprintf(printlimit, sizeof(printlimit), "limited to %d", (int)rlimit.rlim_cur);
-                               desc = str2desc(argv[1]);
-                               ast_cli(fd, "%c%s (%s) is %s.\n", toupper(desc[0]), desc + 1, argv[1], printlimit);
+                                       snprintf(printlimit, sizeof(printlimit), "limited to %d", (int) rlimit.rlim_cur);
+                               desc = str2desc(a->argv[1]);
+                               ast_cli(a->fd, "%c%s (%s) is %s.\n", toupper(desc[0]), desc + 1, a->argv[1], printlimit);
                        } else
-                               ast_cli(fd, "Could not retrieve resource limits for %s: %s\n", str2desc(argv[1]), strerror(errno));
-                       return RESULT_SUCCESS;
+                               ast_cli(a->fd, "Could not retrieve resource limits for %s: %s\n", str2desc(a->argv[1]), strerror(errno));
+                       return CLI_SUCCESS;
                }
        }
 }
 
-static char *complete_ulimit(const char *line, const char *word, int pos, int state)
-{
-       int which = 0, i;
-       int wordlen = strlen(word);
-
-       if (pos > 2)
-               return NULL;
-       for (i = 0; i < sizeof(limits) / sizeof(limits[0]); i++) {
-               if (!strncasecmp(limits[i].limit, word, wordlen)) {
-                       if (++which > state)
-                               return ast_strdup(limits[i].limit);
-               }
-       }
-       return NULL;
-}
-
-static const char ulimit_usage[] =
-"Usage: ulimit {-d|-l|-f|-m|-s|-t|-u|-v|-c|-n} [<num>]\n"
-"       Shows or sets the corresponding resource limit.\n"
-"         -d  Process data segment [readonly]\n"
-"         -l  Memory lock size [readonly]\n"
-"         -f  File size\n"
-"         -m  Process resident memory [readonly]\n"
-"         -s  Process stack size [readonly]\n"
-"         -t  CPU usage [readonly]\n"
-"         -u  Child processes\n"
-#ifdef VMEM_DEF
-"         -v  Process virtual memory [readonly]\n"
-#endif
-"         -c  Core dump file size\n"
-"         -n  Number of file descriptors\n";
-
-static struct ast_cli_entry cli_ulimit = {
-       { "ulimit", NULL }, my_ulimit,
-       "Set or show process resource limits", ulimit_usage, complete_ulimit };
+static struct ast_cli_entry cli_ulimit =
+       AST_CLI_DEFINE(handle_cli_ulimit, "Set or show process resource limits");
 
 static int unload_module(void)
 {
@@ -182,7 +211,7 @@ static int unload_module(void)
 
 static int load_module(void)
 {
-       return ast_cli_register(&cli_ulimit)? AST_MODULE_LOAD_FAILURE: AST_MODULE_LOAD_SUCCESS;
+       return ast_cli_register(&cli_ulimit) ? AST_MODULE_LOAD_FAILURE : AST_MODULE_LOAD_SUCCESS;
 }
 
 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Resource limits");