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annotate auth/hash_password.c @ 279:b3b547563ec7

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Add Google connector service and agent wiki Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code. Co-authored-by: Copilot <[email protected]> Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
author MrJuneJune <me@mrjunejune.com>
date Mon, 17 Aug 2026 22:22:36 -0700
parents 04fee26ecce0
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1 #include "auth/auth_crypto.h"
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2
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3 #include <openssl/crypto.h>
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4
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5 #include <stdio.h>
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6 #include <string.h>
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7 #include <termios.h>
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8 #include <unistd.h>
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9
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10 #define PW_MAX AUTH_CRYPTO_PASSWORD_MAX_BYTES
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11
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12 static int read_password(int fd, char *buf, size_t capacity)
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13 {
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14 size_t len = 0;
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15 int too_long = 0;
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16 for (;;)
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17 {
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18 unsigned char c;
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19 int r = (int)read(fd, &c, 1);
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20 if (r < 0)
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21 return -1;
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22 if (r == 0)
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23 break;
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24 if (c == '\n' || c == '\r')
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25 break;
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26 if (len + 1 >= capacity)
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27 {
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28 too_long = 1;
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29 continue;
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30 }
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31 buf[len++] = (char)c;
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32 }
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33 buf[len] = '\0';
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34 return too_long ? -2 : (int)len;
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35 }
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36
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37 int main(int argc, char **argv)
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38 {
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39 (void)argc;
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40 (void)argv;
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41
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42 int fd = STDIN_FILENO;
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43 int is_tty = isatty(fd);
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44 struct termios old_term;
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45 struct termios new_term;
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46 int restored = 0;
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47
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48 if (is_tty)
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49 {
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50 if (tcgetattr(fd, &old_term) != 0)
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51 {
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52 fprintf(stderr, "hash_password: failed to get terminal attributes\n");
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53 return 1;
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54 }
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55 new_term = old_term;
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56 new_term.c_lflag &= (tcflag_t)~(ECHO | ECHOE | ECHOK | ECHONL);
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57 new_term.c_lflag |= ICANON;
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58 if (tcsetattr(fd, TCSAFLUSH, &new_term) != 0)
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59 {
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60 fprintf(stderr, "hash_password: failed to disable echo\n");
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61 return 1;
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62 }
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63 restored = 1;
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64 fprintf(stderr, "Password: ");
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65 fflush(stderr);
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66 }
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67
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68 char pw[PW_MAX + 1];
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69 memset(pw, 0, sizeof(pw));
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70 int n = read_password(fd, pw, sizeof(pw));
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71
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72 if (restored)
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73 {
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74 tcsetattr(fd, TCSAFLUSH, &old_term);
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75 fprintf(stderr, "\n");
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76 }
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77
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78 if (n == -2)
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79 {
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80 fprintf(stderr, "hash_password: %s\n",
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81 Auth_Crypto_Result_String(AUTH_CRYPTO_PASSWORD_TOO_LONG));
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82 OPENSSL_cleanse(pw, sizeof(pw));
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83 return 1;
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84 }
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85 if (n < 0)
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86 {
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87 fprintf(stderr, "hash_password: read error\n");
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88 OPENSSL_cleanse(pw, sizeof(pw));
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89 return 1;
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90 }
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91 if (n == 0)
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92 {
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93 fprintf(stderr, "hash_password: empty password\n");
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94 OPENSSL_cleanse(pw, sizeof(pw));
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95 return 1;
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96 }
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97
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98 char encoded_hash[AUTH_CRYPTO_PASSWORD_HASH_ENCODED_SIZE];
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99 Auth_Crypto_Result result =
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100 Auth_Crypto_Password_Hash(pw, encoded_hash, sizeof(encoded_hash));
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101 OPENSSL_cleanse(pw, sizeof(pw));
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102
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103 if (result != AUTH_CRYPTO_OK)
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104 {
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105 fprintf(stderr, "hash_password: %s\n", Auth_Crypto_Result_String(result));
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106 return 1;
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107 }
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108
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109 puts(encoded_hash);
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110 return 0;
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111 }