+++ /dev/null
-#include <net-snmp/net-snmp-config.h>
-
-#if HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include <stdio.h>
-#if HAVE_STRING_H
-#include <string.h>
-#else
-#include <strings.h>
-#endif
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <ctype.h>
-#if HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-
-#include <dlfcn.h>
-
-
-#include <net-snmp/net-snmp-includes.h>
-#include <net-snmp/agent/net-snmp-agent-includes.h>
-
-#include "struct.h"
-
-#include "dlmod.h"
-
-static struct dlmod *dlmods = NULL;
-
-int dlmod_next_index = 1;
-
-static void dlmod_parse_config(char *, char *);
-static void dlmod_free_config(void);
-static char dlmod_path[1024];
-
-void
-init_dlmod(void)
-{
- char *p;
- int l;
-
- snmpd_register_config_handler("dlmod", dlmod_parse_config,
- dlmod_free_config, "dlmod-file-to-load");
-
- p = getenv("SNMP_DLMOD_PATH");
- strncpy(dlmod_path, DLMOD_DEFAULT_PATH, sizeof(dlmod_path));
- if (p) {
- if (p[0] == '+') {
- l = strlen(dlmod_path);
- if (dlmod_path[l - 1] != ':')
- strncat(dlmod_path, ":", sizeof(dlmod_path) - l);
- strncat(dlmod_path, p + 1,
- sizeof(dlmod_path) - strlen(dlmod_path));
- } else
- strncpy(dlmod_path, p, sizeof(dlmod_path));
- }
-#if 1
- DEBUGMSGTL(("dlmod", "dlmod_path: %s\n", dlmod_path));
-#endif
-}
-
-void
-deinit_dlmod(void)
-{
- snmpd_unregister_config_handler("dlmod");
-}
-
-static void
-dlmod_parse_config(char *token, char *cptr)
-{
- char *dlm_name, *dlm_path;
- struct dlmod *dlm;
-
- if (cptr == NULL) {
- config_perror("Bad dlmod line");
- return;
- }
- /*
- * remove comments
- */
- *(cptr + strcspn(cptr, "#;\r\n")) = '\0';
-
- dlm = dlmod_create_module();
- if (!dlm)
- return;
-
- /*
- * dynamic module name
- */
- dlm_name = strtok(cptr, "\t ");
- if (dlm_name == NULL) {
- config_perror("Bad dlmod line");
- dlmod_delete_module(dlm);
- return;
- }
- strncpy(dlm->name, dlm_name, sizeof(dlm->name));
-
- /*
- * dynamic module path
- */
- dlm_path = strtok(NULL, "\t ");
- if (dlm_path)
- strncpy(dlm->path, dlm_path, sizeof(dlm->path));
- else
- strncpy(dlm->path, dlm_name, sizeof(dlm->path));
-
- dlmod_load_module(dlm);
-
- if (dlm->status == DLMOD_ERROR)
- snmp_log(LOG_ERR, "%s\n", dlm->error);
-
-}
-
-static void
-dlmod_free_config(void)
-{
- struct dlmod *dtmp, *dtmp2;
-
- for (dtmp = dlmods; dtmp != NULL;) {
- dtmp2 = dtmp;
- dtmp = dtmp->next;
- dlmod_unload_module(dtmp2);
- free(dtmp2);
- }
- dlmods = NULL;
- dlmod_next_index = 1;
-}
-
-struct dlmod *
-dlmod_create_module(void)
-{
- struct dlmod **pdlmod, *dlm;
-#if 1
- DEBUGMSGTL(("dlmod", "dlmod_create_module\n"));
-#endif
- dlm = calloc(1, sizeof(struct dlmod));
- if (dlm == NULL)
- return NULL;
-
- dlm->index = dlmod_next_index++;
- dlm->status = DLMOD_UNLOADED;
-
- for (pdlmod = &dlmods; *pdlmod != NULL; pdlmod = &((*pdlmod)->next));
- (*pdlmod) = dlm;
-
- return dlm;
-}
-
-void
-dlmod_delete_module(struct dlmod *dlm)
-{
- struct dlmod **pdlmod;
-
-#if 1
- DEBUGMSGTL(("dlmod", "dlmod_delete_module\n"));
-#endif
- if (!dlm || dlm->status != DLMOD_UNLOADED)
- return;
-
- for (pdlmod = &dlmods; *pdlmod; pdlmod = &((*pdlmod)->next))
- if (*pdlmod == dlm) {
- *pdlmod = dlm->next;
- free(dlm);
- return;
- }
-}
-
-void
-dlmod_load_module(struct dlmod *dlm)
-{
- char sym_init[64];
- char *p, tmp_path[255];
- int (*dl_init) (void);
-#if 1
- DEBUGMSGTL(("dlmod", "dlmod_load_module\n"));
-#endif
-
- if (!dlm || !dlm->path || !dlm->name || dlm->status != DLMOD_UNLOADED)
- return;
-
-
- if (dlm->path[0] == '/') {
- dlm->handle = dlopen(dlm->path, RTLD_NOW);
- if (dlm->handle == NULL) {
- snprintf(dlm->error, sizeof(dlm->error),
- "dlopen failed: %s", dlerror());
- dlm->status = DLMOD_ERROR;
- return;
- }
- } else {
- for (p = strtok(dlmod_path, ":"); p; p = strtok(NULL, ":")) {
- snprintf(tmp_path, sizeof(tmp_path), "%s/%s.so", p, dlm->path);
-#if 1
- DEBUGMSGTL(("dlmod", "p: %s tmp_path: %s\n", p, tmp_path));
-#endif
- dlm->handle = dlopen(tmp_path, RTLD_NOW);
- if (dlm->handle == NULL) {
- snprintf(dlm->error, sizeof(dlm->error),
- "dlopen failed: %s", dlerror());
- dlm->status = DLMOD_ERROR;
- }
- }
- strncpy(dlm->path, tmp_path, sizeof(dlm->path));
- if (dlm->status == DLMOD_ERROR)
- return;
- }
- snprintf(sym_init, sizeof(sym_init), "_dynamic_init_%s", dlm->name);
- dl_init = dlsym(dlm->handle, sym_init);
- if (dl_init == NULL) {
- snprintf(dlm->error, sizeof(dlm->error),
- "dlsym failed: can't find \'%s\'", sym_init);
- dlm->status = DLMOD_ERROR;
- return;
- }
-
- if (dl_init()) {
- snprintf(dlm->error, sizeof(dlm->error), "\'%s\' failed",
- sym_init);
- dlm->status = DLMOD_ERROR;
- return;
- }
-
- dlm->error[0] = '\0';
- dlm->status = DLMOD_LOADED;
-}
-
-void
-dlmod_unload_module(struct dlmod *dlm)
-{
- char sym_deinit[64];
- char buf[256];
- int (*dl_deinit) (void);
-
- if (!dlm || dlm->status != DLMOD_LOADED)
- return;
-
- snprintf(sym_deinit, sizeof(sym_deinit), "_dynamic_deinit_%s",
- dlm->name);
- dl_deinit = dlsym(dlm->handle, sym_deinit);
- if (dl_deinit == NULL) {
- /** it's right way ? */
- dlm->status = DLMOD_ERROR;
- return;
- }
- dl_deinit();
- dlclose(dlm->handle);
- dlm->status = DLMOD_UNLOADED;
-#if 1
- DEBUGMSGTL(("dlmod", "Module %s unloaded\n", dlm->name));
-#endif
-}
-
-int
-dlmod_get_next_index(void)
-{
- return dlmod_next_index;
-}
-
-struct dlmod *
-dlmod_get_by_index(int iindex)
-{
- struct dlmod *dlmod;
-
- for (dlmod = dlmods; dlmod; dlmod = dlmod->next)
- if (dlmod->index == iindex)
- return dlmod;
-
- return NULL;
-}
-
-#if 0
-struct dlmod *
-dlmod_get_next(struct dlmod *dlm)
-{
- if (dlm)
- return dlmods;
- else
- return dlm->next;
-}
-#endif
projects / bcm963xx.git / blobdiff