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102 lines
3.0 KiB
102 lines
3.0 KiB
#include "common.h" |
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#include "backend.h" |
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#define BACKEND_LIBRARY_PARAM "load" |
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f2b_backend_t * |
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f2b_backend_create(f2b_config_section_t *config, const char *id) { |
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f2b_config_param_t *param = NULL; |
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f2b_backend_t *backend = NULL; |
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int flags = RTLD_NOW | RTLD_LOCAL; |
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const char *dlerr = NULL; |
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assert(config != NULL); |
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assert(config->type == t_backend); |
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param = f2b_config_param_find(config->param, BACKEND_LIBRARY_PARAM); |
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if (!param) { |
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f2b_log_msg(log_error, "can't find '%s' param in backend config", BACKEND_LIBRARY_PARAM); |
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return NULL; |
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} |
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if ((backend = calloc(1, sizeof(f2b_backend_t))) == NULL) |
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return NULL; |
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if ((backend->h = dlopen(param->value, flags)) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->create) = dlsym(backend->h, "create")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->config) = dlsym(backend->h, "config")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->ready) = dlsym(backend->h, "ready")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->start) = dlsym(backend->h, "start")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->stop) = dlsym(backend->h, "stop")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->ping) = dlsym(backend->h, "ping")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->ban) = dlsym(backend->h, "ban")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->unban) = dlsym(backend->h, "unban")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->exists) = dlsym(backend->h, "exists")) == NULL) |
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goto cleanup; |
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if ((*(void **) (&backend->destroy) = dlsym(backend->h, "destroy")) == NULL) |
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goto cleanup; |
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if ((backend->cfg = backend->create(id)) == NULL) { |
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f2b_log_msg(log_error, "backend create config failed"); |
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goto cleanup; |
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} |
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/* try init */ |
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for (param = config->param; param != NULL; param = param->next) { |
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if (strcmp(param->name, BACKEND_LIBRARY_PARAM) == 0) |
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continue; |
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if (backend->config(backend->cfg, param->name, param->value)) |
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continue; |
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f2b_log_msg(log_warn, "param pair not accepted by backend '%s': %s=%s", |
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config->name, param->name, param->value); |
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} |
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if (backend->ready(backend->cfg)) |
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return backend; |
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/* still not ready */ |
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f2b_log_msg(log_error, "backend '%s' not fully configured", config->name); |
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cleanup: |
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dlerr = dlerror(); |
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if (dlerr) |
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f2b_log_msg(log_error, "backend load error: %s", dlerr); |
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if (backend->h) { |
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if (backend->cfg && backend->destroy) |
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backend->destroy(backend->cfg); |
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dlclose(backend->h); |
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} |
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free(backend); |
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return NULL; |
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} |
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void |
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f2b_backend_destroy(f2b_backend_t *backend) { |
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assert(backend != NULL); |
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backend->destroy(backend->cfg); |
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dlclose(backend->h); |
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free(backend); |
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} |
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bool |
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f2b_backend_ban(f2b_backend_t *backend, const char *ip) { |
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assert(backend != NULL); |
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return backend->ban(backend->cfg, ip); |
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} |
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bool |
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f2b_backend_unban(f2b_backend_t *backend, const char *ip) { |
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assert(backend != NULL); |
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return backend->unban(backend->cfg, ip); |
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}
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