LCOV - differential code coverage report
Current view: top level - src/common - username.c (source / functions) Coverage Total Hit UBC CBC
Current: Differential Code Coverage HEAD vs 15 Lines: 68.8 % 16 11 5 11
Current Date: 2023-04-08 17:13:01 Functions: 100.0 % 2 2 2
Baseline: 15 Line coverage date bins:
Baseline Date: 2023-04-08 15:09:40 (240..) days: 68.8 % 16 11 5 11
Legend: Lines: hit not hit Function coverage date bins:
(240..) days: 100.0 % 2 2 2

 Age         Owner                  TLA  Line data    Source code
                                  1                 : /*-------------------------------------------------------------------------
                                  2                 :  *
                                  3                 :  * username.c
                                  4                 :  *    get user name
                                  5                 :  *
                                  6                 :  * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
                                  7                 :  * Portions Copyright (c) 1994, Regents of the University of California
                                  8                 :  *
                                  9                 :  * IDENTIFICATION
                                 10                 :  *    src/common/username.c
                                 11                 :  *
                                 12                 :  *-------------------------------------------------------------------------
                                 13                 :  */
                                 14                 : 
                                 15                 : #ifndef FRONTEND
                                 16                 : #include "postgres.h"
                                 17                 : #else
                                 18                 : #include "postgres_fe.h"
                                 19                 : #endif
                                 20                 : 
                                 21                 : #include <pwd.h>
                                 22                 : #include <unistd.h>
                                 23                 : 
                                 24                 : #include "common/username.h"
                                 25                 : 
                                 26                 : /*
                                 27                 :  * Returns the current user name in a static buffer
                                 28                 :  * On error, returns NULL and sets *errstr to point to a palloc'd message
                                 29                 :  */
                                 30                 : const char *
 3399 bruce                      31 CBC         649 : get_user_name(char **errstr)
                                 32                 : {
                                 33                 : #ifndef WIN32
                                 34                 :     struct passwd *pw;
 3357 tgl                        35             649 :     uid_t       user_id = geteuid();
                                 36                 : 
 3399 bruce                      37             649 :     *errstr = NULL;
                                 38                 : 
 3357 tgl                        39             649 :     errno = 0;                  /* clear errno before call */
 3399 bruce                      40             649 :     pw = getpwuid(user_id);
                                 41             649 :     if (!pw)
                                 42                 :     {
 3165 peter_e                    43 UBC           0 :         *errstr = psprintf(_("could not look up effective user ID %ld: %s"),
                                 44                 :                            (long) user_id,
 2118 tgl                        45               0 :                            errno ? strerror(errno) : _("user does not exist"));
 3399 bruce                      46               0 :         return NULL;
                                 47                 :     }
                                 48                 : 
 3399 bruce                      49 CBC         649 :     return pw->pw_name;
                                 50                 : #else
                                 51                 :     /* Microsoft recommends buffer size of UNLEN+1, where UNLEN = 256 */
                                 52                 :     /* "static" variable remains after function exit */
                                 53                 :     static char username[256 + 1];
                                 54                 :     DWORD       len = sizeof(username);
                                 55                 : 
                                 56                 :     *errstr = NULL;
                                 57                 : 
                                 58                 :     if (!GetUserName(username, &len))
                                 59                 :     {
                                 60                 :         *errstr = psprintf(_("user name lookup failure: error code %lu"),
                                 61                 :                            GetLastError());
                                 62                 :         return NULL;
                                 63                 :     }
                                 64                 : 
                                 65                 :     return username;
                                 66                 : #endif
                                 67                 : }
                                 68                 : 
                                 69                 : 
                                 70                 : /*
                                 71                 :  * Returns the current user name in a static buffer or exits
                                 72                 :  */
                                 73                 : const char *
                                 74             642 : get_user_name_or_exit(const char *progname)
                                 75                 : {
                                 76                 :     const char *user_name;
                                 77                 :     char       *errstr;
                                 78                 : 
                                 79             642 :     user_name = get_user_name(&errstr);
                                 80                 : 
                                 81             642 :     if (!user_name)
                                 82                 :     {
 3399 bruce                      83 UBC           0 :         fprintf(stderr, "%s: %s\n", progname, errstr);
                                 84               0 :         exit(1);
                                 85                 :     }
 3399 bruce                      86 CBC         642 :     return user_name;
                                 87                 : }
        

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