From 4ff6158a6cd29e87222387870e6f01aca41b8183 Mon Sep 17 00:00:00 2001 From: sinanmohd Date: Sat, 6 Apr 2024 17:35:22 +0530 Subject: meson: init --- libnpass/gpg.c | 130 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 libnpass/gpg.c (limited to 'libnpass/gpg.c') diff --git a/libnpass/gpg.c b/libnpass/gpg.c new file mode 100644 index 0000000..574a492 --- /dev/null +++ b/libnpass/gpg.c @@ -0,0 +1,130 @@ +#include +#include +#include + +#include + +#include "gpg.h" +#include "util.h" + +#define fail_if_err(err) \ + if (err) { \ + fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, \ + gpgme_strsource(err), gpgme_strerror(err)); \ + gpg_cleanup(); \ + return 1; \ + } + +static gpgme_ctx_t ctx = NULL; +static gpgme_key_t key = NULL; + +int gpg_init(void); +void gpg_cleanup(void); + +int gpg_init(void) +{ + gpgme_error_t err; + const char *local = setlocale(LC_ALL, ""); + + gpgme_check_version(NULL); + gpgme_set_locale(NULL, LC_CTYPE, local); +#ifdef LC_MESSAGES + gpgme_set_locale(NULL, LC_MESSAGES, local); +#endif + + err = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP); + fail_if_err(err); + err = gpgme_new(&ctx); + fail_if_err(err); + + return 0; +} + +void gpg_cleanup(void) +{ + if (ctx) + gpgme_key_release(key); + if (key) + gpgme_release(ctx); +} + +int gpg_key_validate(const char *fpr) +{ + int r; + gpgme_error_t err; + + r = gpg_init(); + if (r) + return r; + + err = gpgme_get_key(ctx, fpr, &key, 1); + fail_if_err(err); + + gpg_cleanup(); + return 0; +} + +int gpg_decrypt(FILE *pass_out, const char *pass_path) +{ + int r; + char buf[BUFSIZ]; + gpgme_data_t in, out; + gpgme_error_t err; + + r = gpg_init(); + if (r) + return r; + + err = gpgme_data_new_from_file(&in, pass_path, 1); + fail_if_err(err); + err = gpgme_data_new(&out); + fail_if_err(err); + err = gpgme_op_decrypt(ctx, in, out); + fail_if_err(err); + + r = gpgme_data_seek(out, 0, SEEK_SET); + if (r) + fail_if_err (gpgme_err_code_from_errno(errno)); + + while ((r = gpgme_data_read(out, buf, sizeof(buf)))) + fwrite(buf, r, 1, pass_out); + if (r < 0) + fail_if_err(gpgme_err_code_from_errno(errno)); + + gpg_cleanup(); + return 0; +} + +int gpg_encrypt(FILE *stream, const char *fpr, const char *pass, size_t n) +{ + int r; + char buf[BUFSIZ]; + gpgme_data_t in, out; + gpgme_error_t err; + + r = gpg_init(); + if (r) + return r; + + err = gpgme_get_key(ctx, fpr, &key, 1); + fail_if_err(err); + + err = gpgme_data_new_from_mem(&in, pass, n, 0); + fail_if_err(err); + err = gpgme_data_new(&out); + fail_if_err(err); + err = gpgme_op_encrypt(ctx, &key, GPGME_ENCRYPT_ALWAYS_TRUST, in, out); + fail_if_err(err); + + r = gpgme_data_seek(out, 0, SEEK_SET); + if (r) + fail_if_err (gpgme_err_code_from_errno(errno)); + + while ((r = gpgme_data_read(out, buf, sizeof(buf)))) + fwrite(buf, r, 1, stream); + gpg_cleanup(); + if (r < 0) + fail_if_err(gpgme_err_code_from_errno(errno)); + + return 0; +} -- cgit v1.2.3