137 行
3.7 KiB
C
137 行
3.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <locale.h>
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#include <gpgme.h>
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#include <string.h>
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#include "showpass.h"
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void clean_up(
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gpgme_ctx_t ctx,
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gpgme_data_t in,
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gpgme_data_t out,
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FILE* gpgfile,
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char* gpgpath
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) {
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if (gpgfile) fclose(gpgfile);
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if (gpgpath) free(gpgpath);
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gpgme_data_release(in);
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gpgme_data_release(out);
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gpgme_release(ctx);
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}
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void showpass(char* file) {
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char *lang = getenv("SP_LANG");
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gpgme_ctx_t ctx;
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gpgme_error_t err;
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gpgme_data_t in = NULL, out = NULL;
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FILE *gpgfile;
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// GPGMEライブラリを設置
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setlocale(LC_ALL, "");
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gpgme_check_version(NULL);
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gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
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// GPGMEを創作
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err = gpgme_new(&ctx);
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if (err) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0)
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fprintf(stderr, "Failed to generating GPGME: %s\n", gpgme_strerror(err));
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else fprintf(stderr, "GPGMEを創作に失敗：%s\n", gpgme_strerror(err));
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return;
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}
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// OpenPGPプロトコールを設定
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gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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// 暗号化したタイルを開く
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char* homedir = getenv("HOME");
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if (homedir == NULL) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0)
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perror("Failed to getting home directory");
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else perror("ホームディレクトリを受取に失敗");
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return;
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}
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char* basedir = "/.local/share/sp/";
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char* ext = ".gpg";
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int alllen = snprintf(NULL, 0, "%s%s%s%s", homedir, basedir, file, ext) + 1;
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char* gpgpath = malloc(alllen);
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if (gpgpath == NULL) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0)
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perror("Failed to allocating memeory");
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else perror("メモリを割当に失敗");
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return;
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}
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snprintf(gpgpath, alllen, "%s%s%s%s", homedir, basedir, file, ext);
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gpgfile = fopen(gpgpath, "rb");
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if (gpgfile == NULL) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0) {
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perror("Failed to opening file");
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fprintf(stderr, "Failing path: %s\n", gpgpath);
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} else {
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perror("ファイルを開くに失敗");
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fprintf(stderr, "失敗したパス： %s\n", gpgpath);
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}
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free(gpgpath);
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return;
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}
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// ファイルからinデータオブジェクトを創作
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if (gpgme_data_new_from_stream(&in, gpgfile) != GPG_ERR_NO_ERROR) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0)
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perror("Failed to generating the GPGME data object");
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else perror("GPGMEデータオブジェクトを創作に失敗");
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clean_up(ctx, in, out, gpgfile, gpgpath);
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return;
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}
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// outデータオブジェクトを創作
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if (gpgme_data_new(&out) != GPG_ERR_NO_ERROR) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0)
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perror("Failed to generating the GPGME data object");
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else perror("GPGMEデータオブジェクトを創作に失敗");
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clean_up(ctx, in, out, gpgfile, gpgpath);
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return;
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}
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// データオブジェクトを創作
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gpgme_data_new(&out);
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// 復号化して
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err = gpgme_op_decrypt(ctx, in, out);
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if (err) {
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if (lang != NULL && strncmp(lang, "en", 2) == 0)
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fprintf(stderr, "Failed to decrypting: %s\n", gpgme_strerror(err));
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else fprintf(stderr, "復号化に失敗： %s\n", gpgme_strerror(err));
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// 掃除
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clean_up(ctx, in, out, gpgfile, gpgpath);
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return;
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}
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// 復号化したパスワードを表示する
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gpgme_data_seek(out, 0, SEEK_SET);
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char buffer[512];
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ssize_t read_bytes;
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bool islastnl = false;
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while ((read_bytes = gpgme_data_read(out, buffer, sizeof(buffer) - 1)) > 0) {
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fwrite(buffer, 1, read_bytes, stdout);
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if (buffer[read_bytes - 1] == '\n') {
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islastnl = true;
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}
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}
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if (!islastnl) {
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putchar('\n');
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}
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// 掃除
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clean_up(ctx, in, out, gpgfile, gpgpath);
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}
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