585 lines
24 KiB
C
585 lines
24 KiB
C
#include <stdio.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <sysexits.h>
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#if defined(READLINE)
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#include <readline/readline.h>
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#elif defined(EDITLINE)
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#include <histedit.h>
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#endif
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#include "mpw-algorithm.h"
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#include "mpw-util.h"
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#include "mpw-marshall.h"
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#ifndef MP_VERSION
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#define MP_VERSION ?
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#endif
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#define MP_ENV_fullName "MP_FULLNAME"
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#define MP_ENV_algorithm "MP_ALGORITHM"
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#define MP_ENV_format "MP_FORMAT"
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static void usage() {
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inf( ""
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" Master Password v%s\n"
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" https://masterpasswordapp.com\n\n", stringify_def( MP_VERSION ) );
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inf( ""
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"Usage:\n"
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" mpw [-u|-U full-name] [-t pw-type] [-c counter] [-a algorithm] [-s value]\n"
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" [-p purpose] [-C context] [-f|-F format] [-R 0|1] [-v|-q] [-h] site-name\n\n" );
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inf( ""
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" -u full-name Specify the full name of the user.\n"
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" -u checks the master password against the config,\n"
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" -U allows updating to a new master password.\n"
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" Defaults to %s in env or prompts.\n\n", MP_ENV_fullName );
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trc( ""
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" -M master-pw Specify the master password of the user.\n"
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" This is not a safe method of passing the master password,\n"
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" only use it for non-secret passwords, such as for tests.\n\n" );
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inf( ""
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" -t pw-type Specify the password's template.\n"
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" Defaults to 'long' (-p a), 'name' (-p i) or 'phrase' (-p r).\n"
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" x, maximum | 20 characters, contains symbols.\n"
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" l, long | Copy-friendly, 14 characters, symbols.\n"
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" m, medium | Copy-friendly, 8 characters, symbols.\n"
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" b, basic | 8 characters, no symbols.\n"
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" s, short | Copy-friendly, 4 characters, no symbols.\n"
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" i, pin | 4 numbers.\n"
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" n, name | 9 letter name.\n"
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" p, phrase | 20 character sentence.\n"
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" K, key | encryption key (set key size -s bits).\n"
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" P, personal | saved personal password (save with -s pw).\n\n" );
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inf( ""
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" -P value The parameter value.\n"
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" -p i | The login name for the site.\n"
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" -t K | The size of they key to generate, in bits (eg. 256).\n"
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" -t P | The personal password to encrypt.\n\n" );
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inf( ""
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" -c counter The value of the counter.\n"
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" Defaults to 1.\n\n" );
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inf( ""
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" -a version The algorithm version to use, %d - %d.\n"
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" Defaults to %s in env or %d.\n\n",
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MPAlgorithmVersionFirst, MPAlgorithmVersionLast, MP_ENV_algorithm, MPAlgorithmVersionCurrent );
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inf( ""
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" -p purpose The purpose of the generated token.\n"
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" Defaults to 'auth'.\n"
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" a, auth | An authentication token such as a password.\n"
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" i, ident | An identification token such as a username.\n"
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" r, rec | A recovery token such as a security answer.\n\n" );
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inf( ""
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" -C context A purpose-specific context.\n"
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" Defaults to empty.\n"
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" -p a | -\n"
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" -p i | -\n"
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" -p r | Most significant word in security question.\n\n" );
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inf( ""
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" -f|F format The mpsites format to use for reading/writing site parameters.\n"
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" -F forces the use of the given format,\n"
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" -f allows fallback/migration.\n"
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" Defaults to %s in env or json, falls back to plain.\n"
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" n, none | No file\n"
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" f, flat | ~/.mpw.d/Full Name.%s\n"
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" j, json | ~/.mpw.d/Full Name.%s\n\n",
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MP_ENV_format, mpw_marshall_format_extension( MPMarshallFormatFlat ), mpw_marshall_format_extension( MPMarshallFormatJSON ) );
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inf( ""
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" -R redacted Whether to save the mpsites in redacted format or not.\n"
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" Defaults to 1, redacted.\n\n" );
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inf( ""
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" -v Increase output verbosity (can be repeated).\n"
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" -q Decrease output verbosity (can be repeated).\n\n" );
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inf( ""
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" ENVIRONMENT\n\n"
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" %-14s | The full name of the user (see -u).\n"
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" %-14s | The default algorithm version (see -a).\n\n",
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MP_ENV_fullName, MP_ENV_algorithm );
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exit( 0 );
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}
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static const char *mpw_getenv(const char *variableName) {
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char *envBuf = getenv( variableName );
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return envBuf? strdup( envBuf ): NULL;
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}
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static const char *mpw_getline(const char *prompt) {
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fprintf( stderr, "%s ", prompt );
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char *buf = NULL;
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size_t bufSize = 0;
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ssize_t lineSize = getline( &buf, &bufSize, stdin );
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if (lineSize <= 1) {
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free( buf );
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return NULL;
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}
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// Remove the newline.
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buf[lineSize - 1] = '\0';
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return buf;
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}
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static const char *mpw_getpass(const char *prompt) {
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char *passBuf = getpass( prompt );
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if (!passBuf)
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return NULL;
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char *buf = strdup( passBuf );
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bzero( passBuf, strlen( passBuf ) );
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return buf;
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}
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static char *mpw_path(const char *prefix, const char *extension) {
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char *homedir = NULL;
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struct passwd *passwd = getpwuid( getuid() );
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if (passwd)
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homedir = passwd->pw_dir;
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if (!homedir)
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homedir = getenv( "HOME" );
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if (!homedir)
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homedir = getcwd( NULL, 0 );
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char *mpwPath = NULL;
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asprintf( &mpwPath, "%s.%s", prefix, extension );
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char *slash = strstr( mpwPath, "/" );
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if (slash)
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*slash = '\0';
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asprintf( &mpwPath, "%s/.mpw.d/%s", homedir, mpwPath );
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return mpwPath;
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}
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int main(int argc, char *const argv[]) {
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// Master Password defaults.
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const char *fullName = NULL, *masterPassword = NULL, *siteName = NULL, *resultParam = NULL, *keyContext = NULL;
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MPCounterValue siteCounter = MPCounterValueDefault;
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MPResultType resultType = MPResultTypeDefault;
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MPKeyPurpose keyPurpose = MPKeyPurposeAuthentication;
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MPAlgorithmVersion algorithmVersion = MPAlgorithmVersionCurrent;
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MPMarshallFormat sitesFormat = MPMarshallFormatDefault;
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bool allowPasswordUpdate = false, sitesFormatFixed = false, sitesRedacted = true;
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// Read the environment.
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const char *fullNameArg = NULL, *masterPasswordArg = NULL, *siteNameArg = NULL;
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const char *resultTypeArg = NULL, *resultParamArg = NULL, *siteCounterArg = NULL, *algorithmVersionArg = NULL;
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const char *keyPurposeArg = NULL, *keyContextArg = NULL, *sitesFormatArg = NULL, *sitesRedactedArg = NULL;
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fullNameArg = mpw_getenv( MP_ENV_fullName );
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algorithmVersionArg = mpw_getenv( MP_ENV_algorithm );
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sitesFormatArg = mpw_getenv( MP_ENV_format );
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// Read the command-line options.
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for (int opt; (opt = getopt( argc, argv, "u:U:M:t:P:c:a:p:C:f:F:R:vqh" )) != EOF;)
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switch (opt) {
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case 'u':
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fullNameArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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allowPasswordUpdate = false;
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break;
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case 'U':
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fullNameArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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allowPasswordUpdate = true;
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break;
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case 'M':
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// Passing your master password via the command-line is insecure. Testing purposes only.
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masterPasswordArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 't':
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resultTypeArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'P':
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resultParamArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'c':
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siteCounterArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'a':
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algorithmVersionArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'p':
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keyPurposeArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'C':
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keyContextArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'f':
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sitesFormatArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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sitesFormatFixed = false;
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break;
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case 'F':
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sitesFormatArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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sitesFormatFixed = true;
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break;
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case 'R':
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sitesRedactedArg = optarg && strlen( optarg )? strdup( optarg ): NULL;
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break;
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case 'v':
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++mpw_verbosity;
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break;
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case 'q':
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--mpw_verbosity;
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break;
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case 'h':
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usage();
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break;
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case '?':
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switch (optopt) {
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case 'u':
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ftl( "Missing full name to option: -%c\n", optopt );
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return EX_USAGE;
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case 't':
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ftl( "Missing type name to option: -%c\n", optopt );
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return EX_USAGE;
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case 'c':
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ftl( "Missing counter value to option: -%c\n", optopt );
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return EX_USAGE;
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default:
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ftl( "Unknown option: -%c\n", optopt );
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return EX_USAGE;
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}
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default:
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ftl( "Unexpected option: %c\n", opt );
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return EX_USAGE;
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}
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if (optind < argc)
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siteNameArg = strdup( argv[optind] );
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// Determine fullName, siteName & masterPassword.
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if (!(fullNameArg && (fullName = strdup( fullNameArg ))) &&
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!(fullName = mpw_getline( "Your full name:" ))) {
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ftl( "Missing full name.\n" );
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return EX_DATAERR;
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}
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if (!(siteNameArg && (siteName = strdup( siteNameArg ))) &&
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!(siteName = mpw_getline( "Site name:" ))) {
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ftl( "Missing site name.\n" );
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return EX_DATAERR;
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}
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if (!(masterPasswordArg && (masterPassword = strdup( masterPasswordArg ))))
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while (!masterPassword || !strlen( masterPassword ))
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masterPassword = mpw_getpass( "Your master password: " );
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if (sitesFormatArg) {
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sitesFormat = mpw_formatWithName( sitesFormatArg );
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if (ERR == (int)sitesFormat) {
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ftl( "Invalid sites format: %s\n", sitesFormatArg );
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return EX_USAGE;
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}
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}
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// Find the user's sites file.
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FILE *sitesFile = NULL;
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char *sitesPath = mpw_path( fullName, mpw_marshall_format_extension( sitesFormat ) );
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if (!sitesPath || !(sitesFile = fopen( sitesPath, "r" ))) {
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dbg( "Couldn't open configuration file:\n %s: %s\n", sitesPath, strerror( errno ) );
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// Try to fall back to the flat format.
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if (!sitesFormatFixed) {
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free( sitesPath );
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sitesPath = mpw_path( fullName, mpw_marshall_format_extension( MPMarshallFormatFlat ) );
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if (sitesPath && (sitesFile = fopen( sitesPath, "r" )))
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sitesFormat = MPMarshallFormatFlat;
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else
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dbg( "Couldn't open configuration file:\n %s: %s\n", sitesPath, strerror( errno ) );
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}
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}
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// Read the user's sites file.
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MPMarshalledUser *user = NULL;
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MPMarshalledSite *site = NULL;
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if (!sitesFile) {
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free( sitesPath );
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sitesPath = NULL;
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}
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else {
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// Read file.
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size_t readAmount = 4096, bufSize = 0, bufOffset = 0, readSize = 0;
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char *sitesInputData = NULL;
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while ((mpw_realloc( &sitesInputData, &bufSize, readAmount )) &&
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(bufOffset += (readSize = fread( sitesInputData + bufOffset, 1, readAmount, sitesFile ))) &&
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(readSize == readAmount));
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if (ferror( sitesFile ))
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wrn( "Error while reading configuration file:\n %s: %d\n", sitesPath, ferror( sitesFile ) );
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fclose( sitesFile );
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// Parse file.
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MPMarshallInfo *sitesInputInfo = mpw_marshall_read_info( sitesInputData );
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MPMarshallFormat sitesInputFormat = sitesFormatArg? sitesFormat: sitesInputInfo->format;
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MPMarshallError marshallError = { .type = MPMarshallSuccess };
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user = mpw_marshall_read( sitesInputData, sitesInputFormat, masterPassword, &marshallError );
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if (marshallError.type == MPMarshallErrorMasterPassword) {
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// Incorrect master password.
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if (!allowPasswordUpdate) {
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ftl( "Incorrect master password according to configuration:\n %s: %s\n", sitesPath, marshallError.description );
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mpw_marshal_free( user );
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mpw_free( sitesInputData, bufSize );
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free( sitesPath );
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return EX_DATAERR;
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}
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// Update user's master password.
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while (marshallError.type == MPMarshallErrorMasterPassword) {
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inf( "Given master password does not match configuration.\n" );
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inf( "To update the configuration with this new master password, first confirm the old master password.\n" );
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const char *importMasterPassword = NULL;
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while (!importMasterPassword || !strlen( importMasterPassword ))
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importMasterPassword = mpw_getpass( "Old master password: " );
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mpw_marshal_free( user );
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user = mpw_marshall_read( sitesInputData, sitesInputFormat, importMasterPassword, &marshallError );
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}
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if (user) {
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mpw_free_string( user->masterPassword );
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user->masterPassword = strdup( masterPassword );
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}
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}
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mpw_free( sitesInputData, bufSize );
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if (!user || marshallError.type != MPMarshallSuccess) {
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err( "Couldn't parse configuration file:\n %s: %s\n", sitesPath, marshallError.description );
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mpw_marshal_free( user );
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user = NULL;
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free( sitesPath );
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sitesPath = NULL;
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}
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if (user) {
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// Load defaults.
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mpw_free_string( fullName );
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mpw_free_string( masterPassword );
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fullName = strdup( user->fullName );
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masterPassword = strdup( user->masterPassword );
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algorithmVersion = user->algorithm;
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resultType = user->defaultType;
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sitesRedacted = user->redacted;
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if (!sitesRedacted && !sitesRedactedArg)
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wrn( "Sites configuration is not redacted. Use -R 1 to change this.\n" );
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for (size_t s = 0; s < user->sites_count; ++s) {
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site = &user->sites[s];
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if (strcmp( siteName, site->name ) != 0) {
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site = NULL;
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continue;
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}
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resultType = site->type;
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siteCounter = site->counter;
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algorithmVersion = site->algorithm;
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break;
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}
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}
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}
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// Parse default/config-overriding command-line parameters.
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if (sitesRedactedArg)
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sitesRedacted = strcmp( sitesRedactedArg, "1" ) == 0;
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if (siteCounterArg) {
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long long int siteCounterInt = atoll( siteCounterArg );
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if (siteCounterInt < MPCounterValueFirst || siteCounterInt > MPCounterValueLast) {
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ftl( "Invalid site counter: %s\n", siteCounterArg );
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return EX_USAGE;
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}
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siteCounter = (MPCounterValue)siteCounterInt;
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}
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if (algorithmVersionArg) {
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int algorithmVersionInt = atoi( algorithmVersionArg );
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if (algorithmVersionInt < MPAlgorithmVersionFirst || algorithmVersionInt > MPAlgorithmVersionLast) {
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ftl( "Invalid algorithm version: %s\n", algorithmVersionArg );
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return EX_USAGE;
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}
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algorithmVersion = (MPAlgorithmVersion)algorithmVersionInt;
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}
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if (keyPurposeArg) {
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keyPurpose = mpw_purposeWithName( keyPurposeArg );
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if (ERR == (int)keyPurpose) {
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ftl( "Invalid purpose: %s\n", keyPurposeArg );
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return EX_USAGE;
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}
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}
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char *purposeResult = "password";
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switch (keyPurpose) {
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case MPKeyPurposeAuthentication:
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break;
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case MPKeyPurposeIdentification: {
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resultType = MPResultTypeTemplateName;
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purposeResult = "login";
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break;
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}
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case MPKeyPurposeRecovery: {
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resultType = MPResultTypeTemplatePhrase;
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purposeResult = "answer";
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break;
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}
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}
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if (resultTypeArg) {
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resultType = mpw_typeWithName( resultTypeArg );
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if (ERR == (int)resultType) {
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ftl( "Invalid type: %s\n", resultTypeArg );
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return EX_USAGE;
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}
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}
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if (resultParamArg) {
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mpw_free_string( resultParam );
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resultParam = strdup( resultParamArg );
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}
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if (keyContextArg) {
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mpw_free_string( keyContext );
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keyContext = strdup( keyContextArg );
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}
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mpw_free_string( fullNameArg );
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mpw_free_string( masterPasswordArg );
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mpw_free_string( siteNameArg );
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mpw_free_string( resultTypeArg );
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mpw_free_string( resultParamArg );
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mpw_free_string( siteCounterArg );
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mpw_free_string( algorithmVersionArg );
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mpw_free_string( keyPurposeArg );
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mpw_free_string( keyContextArg );
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mpw_free_string( sitesFormatArg );
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mpw_free_string( sitesRedactedArg );
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// Operation summary.
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const char *identicon = mpw_identicon( fullName, masterPassword );
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if (!identicon)
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wrn( "Couldn't determine identicon.\n" );
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dbg( "-----------------\n" );
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dbg( "fullName : %s\n", fullName );
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trc( "masterPassword : %s\n", masterPassword );
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dbg( "identicon : %s\n", identicon );
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dbg( "sitesFormat : %s%s\n", mpw_nameForFormat( sitesFormat ), sitesFormatFixed? " (fixed)": "" );
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dbg( "sitesPath : %s\n", sitesPath );
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dbg( "siteName : %s\n", siteName );
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dbg( "siteCounter : %u\n", siteCounter );
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dbg( "resultType : %s (%u)\n", mpw_nameForType( resultType ), resultType );
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dbg( "resultParam : %s\n", resultParam );
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dbg( "keyPurpose : %s (%u)\n", mpw_nameForPurpose( keyPurpose ), keyPurpose );
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dbg( "keyContext : %s\n", keyContext );
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dbg( "algorithmVersion : %u\n", algorithmVersion );
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|
dbg( "-----------------\n\n" );
|
|
inf( "%s's %s for %s:\n[ %s ]: ", fullName, purposeResult, siteName, identicon );
|
|
mpw_free_string( identicon );
|
|
if (sitesPath)
|
|
free( sitesPath );
|
|
|
|
// Determine master key.
|
|
MPMasterKey masterKey = mpw_masterKey(
|
|
fullName, masterPassword, algorithmVersion );
|
|
mpw_free_string( masterPassword );
|
|
mpw_free_string( fullName );
|
|
if (!masterKey) {
|
|
ftl( "Couldn't derive master key.\n" );
|
|
return EX_SOFTWARE;
|
|
}
|
|
|
|
// Output the result.
|
|
if (keyPurpose == MPKeyPurposeIdentification && site && (resultParam || (!site->loginGenerated && site->loginName))) {
|
|
if (resultParam) {
|
|
mpw_free_string( site->loginName );
|
|
site->loginGenerated = false;
|
|
site->loginName = strdup( resultParam );
|
|
}
|
|
else if (resultTypeArg)
|
|
// TODO: We're not persisting the resultType of the generated login
|
|
site->loginGenerated = true;
|
|
|
|
fprintf( stdout, "%s\n", site->loginName );
|
|
}
|
|
|
|
else if (resultParam && site && resultType & MPResultTypeClassStateful) {
|
|
mpw_free_string( site->content );
|
|
if (!(site->content = mpw_siteState( masterKey, siteName, siteCounter,
|
|
keyPurpose, keyContext, resultType, resultParam, algorithmVersion ))) {
|
|
ftl( "Couldn't encrypt site content.\n" );
|
|
mpw_free( masterKey, MPMasterKeySize );
|
|
return EX_SOFTWARE;
|
|
}
|
|
|
|
fprintf( stdout, "%s\n", site->content );
|
|
}
|
|
else {
|
|
if (!resultParam && site && site->content && resultType & MPResultTypeClassStateful)
|
|
resultParam = strdup( site->content );
|
|
const char *siteResult = mpw_siteResult( masterKey, siteName, siteCounter,
|
|
keyPurpose, keyContext, resultType, resultParam, algorithmVersion );
|
|
if (!siteResult) {
|
|
ftl( "Couldn't generate site result.\n" );
|
|
mpw_free( masterKey, MPMasterKeySize );
|
|
return EX_SOFTWARE;
|
|
}
|
|
|
|
fprintf( stdout, "%s\n", siteResult );
|
|
mpw_free_string( siteResult );
|
|
}
|
|
if (site && site->url)
|
|
inf( "See: %s\n", site->url );
|
|
mpw_free( masterKey, MPMasterKeySize );
|
|
mpw_free_string( siteName );
|
|
mpw_free_string( resultParam );
|
|
mpw_free_string( keyContext );
|
|
|
|
// Update the mpsites file.
|
|
if (user) {
|
|
// TODO: Move this up above the summary and replace the mpw lvars by user/site accessors.
|
|
if (keyPurpose == MPKeyPurposeAuthentication && !(resultType & MPSiteFeatureAlternative)) {
|
|
if (!site)
|
|
site = mpw_marshall_site( user, siteName, resultType, siteCounter, algorithmVersion );
|
|
else {
|
|
site->type = resultType;
|
|
site->counter = siteCounter;
|
|
site->algorithm = algorithmVersion;
|
|
}
|
|
}
|
|
else if (keyPurpose == MPKeyPurposeRecovery && site && keyContext) {
|
|
// TODO: We're not persisting the resultType of the recovery question
|
|
MPMarshalledQuestion *question = NULL;
|
|
for (size_t q = 0; q < site->questions_count; ++q) {
|
|
question = &site->questions[q];
|
|
if (strcmp( keyContext, question->keyword ) != 0) {
|
|
question = NULL;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (!question)
|
|
mpw_marshal_question( site, keyContext );
|
|
}
|
|
if (site) {
|
|
site->lastUsed = user->lastUsed = time( NULL );
|
|
site->uses++;
|
|
}
|
|
|
|
if (!sitesFormatFixed)
|
|
sitesFormat = MPMarshallFormatDefault;
|
|
user->redacted = sitesRedacted;
|
|
|
|
sitesPath = mpw_path( user->fullName, mpw_marshall_format_extension( sitesFormat ) );
|
|
dbg( "Updating: %s (%s)\n", sitesPath, mpw_nameForFormat( sitesFormat ) );
|
|
if (!sitesPath || !(sitesFile = fopen( sitesPath, "w" )))
|
|
wrn( "Couldn't create updated configuration file:\n %s: %s\n", sitesPath, strerror( errno ) );
|
|
|
|
else {
|
|
char *buf = NULL;
|
|
MPMarshallError marshallError = { .type = MPMarshallSuccess };
|
|
if (!mpw_marshall_write( &buf, sitesFormat, user, &marshallError ) || marshallError.type != MPMarshallSuccess)
|
|
wrn( "Couldn't encode updated configuration file:\n %s: %s\n", sitesPath, marshallError.description );
|
|
|
|
else if (fwrite( buf, sizeof( char ), strlen( buf ), sitesFile ) != strlen( buf ))
|
|
wrn( "Error while writing updated configuration file:\n %s: %d\n", sitesPath, ferror( sitesFile ) );
|
|
|
|
mpw_free_string( buf );
|
|
fclose( sitesFile );
|
|
}
|
|
free( sitesPath );
|
|
mpw_marshal_free( user );
|
|
}
|
|
|
|
return 0;
|
|
}
|