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67 lines
1.7 KiB
67 lines
1.7 KiB
9 years ago
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#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) {
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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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assert(config != NULL);
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assert(config->type == t_backend);
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f2b_config_find_param(config->param, BACKEND_LIBRARY_PARAM);
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if (!param)
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return NULL;
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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->init) = dlsym(backend->h, "init")) == 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->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 (backend->ready)
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return backend;
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/* try init */
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for (; 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->init(param->name, param->value)) {
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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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}
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if (backend->ready)
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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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if (backend->h)
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dlclose(backend->h);
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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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dlclose(backend->h);
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free(backend);
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}
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