Created
September 2, 2024 15:03
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Test a Pidgin plug-in file (.dll or .so) for loadability as a GModule (originally made for Lurch in 2022)
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| // Copyright (c) 2022 Sebastian Pipping <sebastian@pipping.org> | |
| // Licensed under the GPL v2 or later | |
| #include <errno.h> | |
| #include <stdbool.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <gmodule.h> | |
| int main(int argc, char **argv) { | |
| if (argc < 2) { | |
| printf("usage: %s PATH/TO/MODULE.(dll|so) [..]\n", argv[0]); | |
| return 1; | |
| } | |
| bool success = true; | |
| size_t i = 1; | |
| for (; i < argc; i++) { | |
| const char *const filename = argv[i]; | |
| // NOTE: g_module_open does not like opening plain "lurch.(so|dll)": | |
| // it needs a path. So we turn potentially relative filenames | |
| // into full absolute ones to avoid unncessary (and misleading) | |
| // error "No such file or directory" and to make it work regardless. | |
| gchar *const absolute_filename = g_canonicalize_filename(filename, NULL); | |
| if (!absolute_filename) { | |
| printf("[-] Could not canonicalize " | |
| "filename %s due to error: %s (code %d)\n", | |
| filename, strerror(errno), errno); | |
| success = false; | |
| continue; | |
| } | |
| printf("[*] Opening module %s...\n", filename); | |
| GModule *const module = | |
| g_module_open(absolute_filename, G_MODULE_BIND_LOCAL); | |
| g_free(absolute_filename); | |
| if (!module) { | |
| success = false; | |
| const gchar *const error_details = g_module_error(); | |
| printf("[-] Opening module %s has FAILED: %s\n", filename, | |
| (char *)error_details); | |
| continue; | |
| } | |
| printf("[+] Opened module %s successfully.\n", filename); | |
| const gchar *const symbol_name = "purple_init_plugin"; | |
| gpointer dummy; | |
| printf("[*] Checking module %s for symbol %s...\n", filename, | |
| (char *)symbol_name); | |
| if (g_module_symbol(module, symbol_name, &dummy)) { | |
| printf("[+] Symbol %s found.\n", symbol_name); | |
| } else { | |
| printf("[-] Symbol %s NOT found.\n", symbol_name); | |
| success = false; | |
| } | |
| printf("[*] Closing module %s...\n", filename); | |
| g_module_close(module); | |
| printf("[+] Closed module %s.\n", filename); | |
| } | |
| if (success) { | |
| printf("[+] Good.\n"); | |
| } else { | |
| printf("[-] BAD.\n"); | |
| } | |
| return success ? 0 : 1; | |
| } |
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