tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

instsec.c (4184B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 #include <plarena.h>
      6 #include <prerror.h>
      7 #include <prio.h>
      8 #include <prprf.h>
      9 #include <seccomon.h>
     10 #include <secmod.h>
     11 #include <jar.h>
     12 #include <secutil.h>
     13 
     14 /* These are installation functions that make calls to the security library.
     15 * We don't want to include security include files in the C++ code too much.
     16 */
     17 
     18 static char *PR_fgets(char *buf, int size, PRFileDesc *file);
     19 
     20 /***************************************************************************
     21 *
     22 * P k 1 1 I n s t a l l _ A d d N e w M o d u l e
     23 */
     24 int
     25 Pk11Install_AddNewModule(char *moduleName, char *dllPath,
     26                         unsigned long defaultMechanismFlags,
     27                         unsigned long cipherEnableFlags)
     28 {
     29    return (SECMOD_AddNewModule(moduleName, dllPath,
     30                                SECMOD_PubMechFlagstoInternal(defaultMechanismFlags),
     31                                SECMOD_PubCipherFlagstoInternal(cipherEnableFlags)) == SECSuccess)
     32               ? 0
     33               : -1;
     34 }
     35 
     36 /*************************************************************************
     37 *
     38 * P k 1 1 I n s t a l l _ U s e r V e r i f y J a r
     39 *
     40 * Gives the user feedback on the signatures of a JAR files, asks them
     41 * whether they actually want to continue.
     42 * Assumes the jar structure has already been created and is valid.
     43 * Returns 0 if the user wants to continue the installation, nonzero
     44 * if the user wishes to abort.
     45 */
     46 short
     47 Pk11Install_UserVerifyJar(JAR *jar, PRFileDesc *out, PRBool query)
     48 {
     49    JAR_Context *ctx;
     50    JAR_Cert *fing;
     51    JAR_Item *item;
     52    char stdinbuf[80];
     53    int count = 0;
     54 
     55    CERTCertificate *cert, *prev = NULL;
     56 
     57    PR_fprintf(out, "\nThis installation JAR file was signed by:\n");
     58 
     59    ctx = JAR_find(jar, NULL, jarTypeSign);
     60 
     61    while (JAR_find_next(ctx, &item) >= 0) {
     62        fing = (JAR_Cert *)item->data;
     63        cert = fing->cert;
     64        if (cert == prev) {
     65            continue;
     66        }
     67 
     68        count++;
     69        PR_fprintf(out, "----------------------------------------------\n");
     70        if (cert) {
     71            if (cert->nickname) {
     72                PR_fprintf(out, "**NICKNAME**\n%s\n", cert->nickname);
     73            }
     74            if (cert->subjectName) {
     75                PR_fprintf(out, "**SUBJECT NAME**\n%s\n", cert->subjectName);
     76            }
     77            if (cert->issuerName) {
     78                PR_fprintf(out, "**ISSUER NAME**\n%s\n", cert->issuerName);
     79            }
     80        } else {
     81            PR_fprintf(out, "No matching certificate could be found.\n");
     82        }
     83        PR_fprintf(out, "----------------------------------------------\n\n");
     84 
     85        prev = cert;
     86    }
     87 
     88    JAR_find_end(ctx);
     89 
     90    if (count == 0) {
     91        PR_fprintf(out, "No signatures found: JAR FILE IS UNSIGNED.\n");
     92    }
     93 
     94    if (query) {
     95        PR_fprintf(out,
     96                   "Do you wish to continue this installation? (y/n) ");
     97 
     98        if (PR_fgets(stdinbuf, 80, PR_STDIN) != NULL) {
     99            char *response;
    100 
    101            if ((response = strtok(stdinbuf, " \t\n\r"))) {
    102                if (!PL_strcasecmp(response, "y") ||
    103                    !PL_strcasecmp(response, "yes")) {
    104                    return 0;
    105                }
    106            }
    107        }
    108    }
    109 
    110    return 1;
    111 }
    112 
    113 /**************************************************************************
    114 *
    115 * P R _ f g e t s
    116 *
    117 * fgets implemented with NSPR.
    118 */
    119 static char *
    120 PR_fgets(char *buf, int size, PRFileDesc *file)
    121 {
    122    int i;
    123    int status;
    124    char c;
    125 
    126    i = 0;
    127    while (i < size - 1) {
    128        status = PR_Read(file, (void *)&c, 1);
    129        if (status == -1) {
    130            return NULL;
    131        } else if (status == 0) {
    132            break;
    133        }
    134        buf[i++] = c;
    135        if (c == '\n') {
    136            break;
    137        }
    138    }
    139    buf[i] = '\0';
    140 
    141    return buf;
    142 }
    143 
    144 /**************************************************************************
    145 *
    146 * m y S E C U _ E r r o r S t r i n g
    147 *
    148 */
    149 const char *
    150 mySECU_ErrorString(PRErrorCode errnum)
    151 {
    152    return SECU_Strerror(errnum);
    153 }