1 | #ifndef _NO_GETPWENT |
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2 | |
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3 | #include <stdio.h> |
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4 | #include <sys/types.h> |
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5 | #include <pwd.h> |
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6 | #include <errno.h> |
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7 | #include <unistd.h> |
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8 | #include <stdlib.h> |
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9 | #include <string.h> |
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10 | #include <limits.h> |
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11 | |
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12 | static struct passwd pw_passwd; /* password structure */ |
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13 | static FILE *passwd_fp; |
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14 | |
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15 | static char logname[8]; |
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16 | static char password[1024]; |
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17 | static char gecos[1024]; |
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18 | static char dir[1024]; |
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19 | static char shell[1024]; |
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20 | |
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21 | struct passwd * |
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22 | getpwnam (name) |
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23 | const char *name; |
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24 | { |
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25 | FILE *fp; |
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26 | char buf[1024]; |
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27 | |
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28 | if ((fp = fopen ("/etc/passwd", "r")) == NULL) |
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29 | { |
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30 | return NULL; |
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31 | } |
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32 | |
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33 | while (fgets (buf, sizeof (buf), fp)) |
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34 | { |
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35 | sscanf (buf, "%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n", |
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36 | logname, password, &pw_passwd.pw_uid, |
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37 | &pw_passwd.pw_gid, gecos, |
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38 | dir, shell); |
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39 | pw_passwd.pw_name = logname; |
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40 | pw_passwd.pw_passwd = password; |
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41 | pw_passwd.pw_comment = ""; |
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42 | pw_passwd.pw_gecos = gecos; |
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43 | pw_passwd.pw_dir = dir; |
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44 | pw_passwd.pw_shell = shell; |
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45 | |
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46 | if (!strcmp (logname, name)) |
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47 | { |
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48 | fclose (fp); |
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49 | return &pw_passwd; |
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50 | } |
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51 | } |
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52 | fclose (fp); |
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53 | return NULL; |
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54 | } |
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55 | |
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56 | struct passwd * |
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57 | getpwuid (uid_t uid) |
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58 | { |
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59 | FILE *fp; |
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60 | char buf[1024]; |
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61 | |
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62 | if ((fp = fopen ("/etc/passwd", "r")) == NULL) |
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63 | { |
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64 | return NULL; |
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65 | } |
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66 | |
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67 | while (fgets (buf, sizeof (buf), fp)) |
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68 | { |
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69 | sscanf (buf, "%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n", |
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70 | logname, password, &pw_passwd.pw_uid, |
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71 | &pw_passwd.pw_gid, gecos, |
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72 | dir, shell); |
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73 | pw_passwd.pw_name = logname; |
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74 | pw_passwd.pw_passwd = password; |
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75 | pw_passwd.pw_comment = ""; |
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76 | pw_passwd.pw_gecos = gecos; |
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77 | pw_passwd.pw_dir = dir; |
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78 | pw_passwd.pw_shell = shell; |
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79 | |
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80 | if (uid == pw_passwd.pw_uid) |
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81 | { |
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82 | fclose (fp); |
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83 | return &pw_passwd; |
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84 | } |
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85 | } |
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86 | fclose (fp); |
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87 | return NULL; |
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88 | } |
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89 | |
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90 | struct passwd * |
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91 | getpwent () |
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92 | { |
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93 | char buf[1024]; |
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94 | |
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95 | if (passwd_fp == NULL) |
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96 | return NULL; |
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97 | |
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98 | if (fgets (buf, sizeof (buf), passwd_fp) == NULL) |
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99 | return NULL; |
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100 | |
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101 | sscanf (buf, "%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n", |
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102 | logname, password, &pw_passwd.pw_uid, |
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103 | &pw_passwd.pw_gid, gecos, |
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104 | dir, shell); |
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105 | pw_passwd.pw_name = logname; |
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106 | pw_passwd.pw_passwd = password; |
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107 | pw_passwd.pw_comment = ""; |
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108 | pw_passwd.pw_gecos = gecos; |
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109 | pw_passwd.pw_dir = dir; |
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110 | pw_passwd.pw_shell = shell; |
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111 | |
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112 | return &pw_passwd; |
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113 | } |
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114 | |
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115 | void |
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116 | setpwent () |
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117 | { |
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118 | if (passwd_fp != NULL) |
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119 | fclose (passwd_fp); |
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120 | |
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121 | passwd_fp = fopen ("/etc/passwd", "r"); |
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122 | } |
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123 | |
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124 | void |
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125 | endpwent () |
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126 | { |
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127 | if (passwd_fp != NULL) |
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128 | fclose (passwd_fp); |
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129 | } |
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130 | |
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131 | #endif /* !_NO_GETPWENT */ |
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