diff options
| -rw-r--r-- | .gitignore | 3 | ||||
| -rw-r--r-- | Makefile | 5 | ||||
| -rw-r--r-- | main.c | 244 | ||||
| -rw-r--r-- | test.key | 27 |
4 files changed, 279 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d2cf588 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +*~ +*.[ao] +monkeysphere diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..eb82821 --- /dev/null +++ b/Makefile @@ -0,0 +1,5 @@ +monkeysphere: main.c + gcc -g -Wall --pedantic -o monkeysphere main.c `libgnutls-config --libs --cflags` -lgnutls-extra + +clean: + rm monkeysphere @@ -0,0 +1,244 @@ +#include <gnutls/gnutls.h> +#include <gnutls/openpgp.h> +#include <gnutls/x509.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <stdarg.h> + +void err(const char* fmt, ...) { + static FILE* STDERR = NULL; + va_list ap; + + if (NULL == STDERR) + STDERR = fdopen(STDERR_FILENO, "a"); + va_start(ap, fmt); + vfprintf(STDERR, fmt, ap); + va_end(ap); +} + + +void init_datum(gnutls_datum_t* d) { + d->data = NULL; + d->size = 0; +} +void free_datum(gnutls_datum_t* d) { + gnutls_free(d->data); + d->data = NULL; + d->size = 0; +} + +/* read the passed-in string, store in a single datum */ +int set_datum_string(gnutls_datum_t* d, const char* s) { + unsigned int x = strlen(s)+1; + unsigned char* c = NULL; + + c = gnutls_realloc(d->data, x); + if (NULL == c) + return -1; + d->data = c; + d->size = x; + memcpy(d->data, s, x); + return 0; +} + +/* read the passed-in file descriptor until EOF, store in a single + datum */ +int set_datum_fd(gnutls_datum_t* d, int fd) { + unsigned int bufsize = 1024; + unsigned int len = 0; + + FILE* f = NULL; + if (bufsize > d->size) { + bufsize = 1024; + if (gnutls_realloc(d->data, bufsize) == NULL) { + err("out of memory!\n"); + return -1; + } + d->size = bufsize; + } else { + bufsize = d->size; + } + f = fdopen(fd, "r"); + while (!feof(f) && !ferror(f)) { + if (len == bufsize) { + /* allocate more space by doubling: */ + bufsize *= 2; + if (gnutls_realloc(d->data, bufsize) == NULL) { + err("out of memory!\n"); + return -1; + }; + d->size = bufsize; + } + len += fread(d->data + len, 1, bufsize - len, f); + } + if (ferror(f)) { + err("Error reading from fd %d\n", fd); + return -1; + } + /* touch up buffer size to match reality: */ + gnutls_realloc(d->data, len); + d->size = len; + return 0; +} + +/* read the file indicated (by na1me) in the fname parameter. store + its entire contents in a single datum. */ +int set_datum_file(gnutls_datum_t* d, const char* fname) { + struct stat sbuf; + unsigned char* c = NULL; + FILE* file = NULL; + size_t x = 0; + + if (0 != stat(fname, &sbuf)) { + err("failed to stat '%s'\n", fname); + return -1; + } + + c = gnutls_realloc(d->data, sbuf.st_size); + if (NULL == c) { + err("failed to allocate %d bytes for '%s'\n", sbuf.st_size, fname); + return -1; + } + + d->data = c; + d->size = sbuf.st_size; + file = fopen(fname, "r"); + if (NULL == file) { + err("failed to open '%s' for reading\n", fname); + return -1; + } + + x = fread(d->data, d->size, 1, file); + if (x != 1) { + err("tried to read %d bytes, read %d instead from '%s'\n", d->size, x, fname); + fclose(file); + return -1; + } + fclose(file); + return 0; +} + + +int main(int argc, char* argv[]) { + const char* version = NULL; + + gnutls_x509_privkey_t x509_privkey; + gnutls_datum_t data; + int ret; + + /* + const char *certfile, *keyfile; + gnutls_certificate_credentials_t pgp_creds; + */ + gnutls_datum_t m, e, d, p, q, u; + gnutls_x509_crt_t crt; + + gnutls_openpgp_privkey_t pgp_privkey; + gnutls_openpgp_crt_fmt_t pgp_format; + gnutls_pk_algorithm_t pgp_algo; + unsigned int pgp_bits; + + char output_data[10240]; + size_t ods = sizeof(output_data); + + init_datum(&data); + + if (ret = gnutls_global_init(), ret) { + err("Failed to do gnutls_global_init() (error: %d)\n", ret); + return 1; + } + + + + version = gnutls_check_version(NULL); + + if (version) + printf("gnutls version: %s\n", version); + else { + printf("no version found!\n"); + return 1; + } + + if (ret = gnutls_x509_privkey_init(&x509_privkey), ret) { + err("Failed to initialize X.509 private key (error: %d)\n", ret); + return 1; + } + + if (ret = gnutls_openpgp_privkey_init(&pgp_privkey), ret) { + err("Failed to initialized OpenPGP private key (error: %d)\n", ret); + return 1; + } + + /* how do we initialize data? */ + + /* reading from the file descriptor doesn't work right yet: + if (ret = set_datum_fd(&data, 0), ret) { + err("didn't read file descriptor 0\n"); + return 1; + } + */ + + if (ret = set_datum_file(&data, argv[1]), ret) { + err("didn't read file '%s'\n", argv[1]); + return 1; + } + + /* treat the passed file as an X.509 private key, and extract its + component values: */ + +/* if (ret = gnutls_x509_privkey_import(x509_privkey, &data, GNUTLS_X509_FMT_PEM), ret) { */ +/* err("Failed to import the X.509 key (error: %d)\n", ret); */ +/* return 1; */ +/* } */ +/* gnutls_x509_privkey_export_rsa_raw(x509_privkey, &m, &e, &d, &p, &q, &u); */ + + /* try to print the PEM-encoded private key: */ +/* ret = gnutls_x509_privkey_export (x509_privkey, */ +/* GNUTLS_X509_FMT_PEM, */ +/* output_data, */ +/* &ods); */ +/* printf("ret: %u; ods: %u;\n", ret, ods); */ +/* if (ret == 0) { */ +/* write(0, output_data, ods); */ +/* } */ + + + /* format could be either: GNUTLS_OPENPGP_FMT_RAW, + GNUTLS_OPENPGP_FMT_BASE64 */ + pgp_format = GNUTLS_OPENPGP_FMT_RAW; + if (ret = gnutls_openpgp_privkey_import (pgp_privkey, &data, pgp_format, NULL, 0), ret) { + err("failed to import the OpenPGP private key (error: %d)\n", ret); + return 1; + } + pgp_algo = gnutls_openpgp_privkey_get_pk_algorithm(pgp_privkey, &pgp_bits); + if (pgp_algo < 0) { + err("failed to get OpenPGP key algorithm (error: %d)\n", pgp_algo); + return 1; + } + if (pgp_algo != GNUTLS_PK_RSA) { + err("OpenPGP Key was not RSA (actual algorithm was: %d)\n", pgp_algo); + return 1; + } + + printf("OpenPGP RSA Key, with %d bits\n", pgp_bits); + + + ret = gnutls_x509_privkey_export (pgp_privkey, + GNUTLS_X509_FMT_PEM, + output_data, + &ods); + printf("ret: %u; ods: %u;\n", ret, ods); + if (ret == 0) { + write(0, output_data, ods); + } + + + gnutls_x509_privkey_deinit(x509_privkey); + gnutls_openpgp_privkey_deinit(pgp_privkey); + gnutls_global_deinit(); + return 0; +} diff --git a/test.key b/test.key new file mode 100644 index 0000000..4e05880 --- /dev/null +++ b/test.key @@ -0,0 +1,27 @@ +-----BEGIN RSA PRIVATE KEY----- +MIIEogIBAAKCAQEAxMv33LvWBZnKtahorHGYdBZqVxrNUQcVNrgxp4bf/FvgvSLG +kBrw6wHFdVYvWWViD5efrJugqA4+pKp16LEWlc7JZICrou4vEJGkvoqBIJC/4cVN +xcwV1a8jo9ZOYjt0JIyuHrEDGW/edQYWI41XO/H+QdMDsdI+oOmfPV/V4eMyjGKH +vRJ+xDae5izhUb3Lb00YnxpP2n/zhvHpn7weu+bzvwb3pMMo9336Ft7m5ulGPJzN ++3l595LW+lUSDUlUJbACp4Nyn+i9ODPV6xzghzirsh7rnD8jD2kaqIVkcvEhusoB +JN3daPXt9t6m5cfsCWu31BXdbpTWiLIZRUxDzQIBIwKCAQEAl9CMAg0+s90KFxuD +8r4H5IZSCK5GnZe/6GI07vMEj3oTxRrTsP7XG7DoyDsr1z+UyjMjZ+XFE+27S9P0 +ju8Cy1Zg2ICEZ78OXT0nUSkEhtYQXbV2gqTAYwNzQ9/WEUPOn9o9LZ5+u9n0wKzs +gdNvLj5WbUsC2aIwUD8xswDJkP5cA4RfKo8Mz40aXbK6b+S/bOKEkXRFvOor46pl +A8GHxUVcUPUG7LAXCm1FWrDob6FTlv3yW8DeVTCYwt6HdrTmc9b+yOinwMR6ZvUz +R6AESGG7czCvA6rpkCcprfCPx0gfntuzLiGRtl54GvbYWWtPDlxnPwcw1zcSALvM +pJNpawKBgQD/zze04kYZBNDTxolBrZltpPXtPpOrG2Otp8CHreOKn0TifCFPDnCb +ewUhxuDRA+L9KPLT311DtHfIzXJ8/RD6K/QE72ny39h2X2Pn2hWSgb9+iysHBDNc +jb136QFoKQcpqUpLEfTvA71Yqvuk6gsYiuWnIN5KJwy/AhwFQnK/WQKBgQDE8X87 +C+0JSg2ybUopOQVSrvildJEa8CWbM1SAL1j3E24U2fPh+zVmIxqa2m4X/PxFBBTv +WVGayzFkmJK2Dgt7F7hBqi5HelP0B38dXtkPlK6idTALNHoS/7HCDXISgHmDOhcQ +LHGQUuQMkTq6H4cOMwTNO5aM2zc5E9uF/hptlQKBgEHHkftQIKdZAn+Zc8Bud+j+ +iGGTv5JmIPIj0mwIJJFcJ6f0CJCr8RIJsNzMvXeTSP9FCz3LuOWGLW4mM2H37mw3 +MB6GtNgNrLC5cXYiIs3m2XhPq/p9bEr/4ENnzSlposGR7ohVExjjtFig/uFDfzIy +WE+MG+cunOCoxWBwLCKTAoGBALQP/0vtpYTV/eT2NS0A7uyCt3Kzt94dZDYgTUH/ +Z0hMR2OFcUOj2Qzs5R/dpnxVA+dUMGXOAXeVNHk7CcsFhtbxHX3dbCQYEj4yvVyu +fVAS6M8MDqsoqh//uHbnuMB1dmlZrq+zmwecPjdgNbF76TGNuz9MbGOGmOO6Yk6f +LhsLAoGAJoK+yRDaEFDwrjdvGazEy/d1CtknkGY2r4vb8giEodFJcQQhtVtjnYPl +gDIpbcpeT0GDiZd0pxAxpibbKM63pYz8PKtlq0B/qXgArRgJnbku01Jc4iLVWPqK +qitRgsz1HdN2tIqa8oQE0iuvyoq+r6+pqcQJd7sc6lKlk0gO0Mo= +-----END RSA PRIVATE KEY----- |