| File: | src/usr.bin/mg/dir.c |
| Warning: | line 57, column 7 Although the value stored to 'bufp' is used in the enclosing expression, the value is never actually read from 'bufp' |
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| 1 | /* $OpenBSD: dir.c,v 1.31 2019/06/28 13:35:02 deraadt Exp $ */ |
| 2 | |
| 3 | /* This file is in the public domain. */ |
| 4 | |
| 5 | /* |
| 6 | * Name: MG 2a |
| 7 | * Directory management functions |
| 8 | * Created: Ron Flax (ron@vsedev.vse.com) |
| 9 | * Modified for MG 2a by Mic Kaczmarczik 03-Aug-1987 |
| 10 | */ |
| 11 | |
| 12 | #include <sys/queue.h> |
| 13 | #include <sys/stat.h> |
| 14 | #include <signal.h> |
| 15 | #include <stdio.h> |
| 16 | #include <string.h> |
| 17 | #include <unistd.h> |
| 18 | |
| 19 | #include "def.h" |
| 20 | |
| 21 | static char mgcwd[NFILEN1024]; |
| 22 | |
| 23 | /* |
| 24 | * Initialize anything the directory management routines need. |
| 25 | */ |
| 26 | void |
| 27 | dirinit(void) |
| 28 | { |
| 29 | mgcwd[0] = '\0'; |
| 30 | if (getcwd(mgcwd, sizeof(mgcwd)) == NULL((void *)0)) |
| 31 | ewprintf("Can't get current directory!"); |
| 32 | if (mgcwd[0] != '\0' && !(mgcwd[0] == '/' && mgcwd[1] == '\0')) |
| 33 | (void)strlcat(mgcwd, "/", sizeof(mgcwd)); |
| 34 | } |
| 35 | |
| 36 | /* |
| 37 | * Change current working directory. |
| 38 | */ |
| 39 | /* ARGSUSED */ |
| 40 | int |
| 41 | changedir(int f, int n) |
| 42 | { |
| 43 | char bufc[NFILEN1024], *bufp; |
| 44 | |
| 45 | (void)strlcpy(bufc, mgcwd, sizeof(bufc)); |
| 46 | if ((bufp = eread("Change default directory: ", bufc, NFILEN1024, |
| 47 | EFDEF0x0020 | EFNEW0x0008 | EFCR0x0010 | EFFILE0x0004)) == NULL((void *)0)) |
| 48 | return (ABORT2); |
| 49 | else if (bufp[0] == '\0') |
| 50 | return (FALSE0); |
| 51 | /* Append trailing slash */ |
| 52 | if (chdir(bufc) == -1) { |
| 53 | dobeep(); |
| 54 | ewprintf("Can't change dir to %s", bufc); |
| 55 | return (FALSE0); |
| 56 | } |
| 57 | if ((bufp = getcwd(mgcwd, sizeof(mgcwd))) == NULL((void *)0)) { |
Although the value stored to 'bufp' is used in the enclosing expression, the value is never actually read from 'bufp' | |
| 58 | if (bufc[0] == '/') |
| 59 | (void)strlcpy(mgcwd, bufc, sizeof(mgcwd)); |
| 60 | else |
| 61 | (void)strlcat(mgcwd, bufc, sizeof(mgcwd)); |
| 62 | } |
| 63 | if (mgcwd[strlen(mgcwd) - 1] != '/') |
| 64 | (void)strlcat(mgcwd, "/", sizeof(mgcwd)); |
| 65 | ewprintf("Current directory is now %s", mgcwd); |
| 66 | return (TRUE1); |
| 67 | } |
| 68 | |
| 69 | /* |
| 70 | * Show current directory. |
| 71 | */ |
| 72 | /* ARGSUSED */ |
| 73 | int |
| 74 | showcwdir(int f, int n) |
| 75 | { |
| 76 | ewprintf("Current directory: %s", mgcwd); |
| 77 | return (TRUE1); |
| 78 | } |
| 79 | |
| 80 | int |
| 81 | getcwdir(char *buf, size_t len) |
| 82 | { |
| 83 | if (strlcpy(buf, mgcwd, len) >= len) |
| 84 | return (FALSE0); |
| 85 | |
| 86 | return (TRUE1); |
| 87 | } |
| 88 | |
| 89 | /* Create the directory and it's parents. */ |
| 90 | /* ARGSUSED */ |
| 91 | int |
| 92 | makedir(int f, int n) |
| 93 | { |
| 94 | return (ask_makedir()); |
| 95 | } |
| 96 | |
| 97 | int |
| 98 | ask_makedir(void) |
| 99 | { |
| 100 | |
| 101 | char bufc[NFILEN1024]; |
| 102 | char *path; |
| 103 | |
| 104 | if (getbufcwd(bufc, sizeof(bufc)) != TRUE1) |
| 105 | return (ABORT2); |
| 106 | if ((path = eread("Make directory: ", bufc, NFILEN1024, |
| 107 | EFDEF0x0020 | EFNEW0x0008 | EFCR0x0010 | EFFILE0x0004)) == NULL((void *)0)) |
| 108 | return (ABORT2); |
| 109 | else if (path[0] == '\0') |
| 110 | return (FALSE0); |
| 111 | |
| 112 | return (do_makedir(path)); |
| 113 | } |
| 114 | |
| 115 | int |
| 116 | do_makedir(char *path) |
| 117 | { |
| 118 | struct stat sb; |
| 119 | int finished, ishere; |
| 120 | mode_t dir_mode, f_mode, oumask; |
| 121 | char *slash; |
| 122 | |
| 123 | if ((path = adjustname(path, TRUE1)) == NULL((void *)0)) |
| 124 | return (FALSE0); |
| 125 | |
| 126 | /* Remove trailing slashes */ |
| 127 | slash = strrchr(path, '\0'); |
| 128 | while (--slash > path && *slash == '/') |
| 129 | *slash = '\0'; |
| 130 | |
| 131 | slash = path; |
| 132 | |
| 133 | oumask = umask(0); |
| 134 | f_mode = 0777 & ~oumask; |
| 135 | dir_mode = f_mode | S_IWUSR0000200 | S_IXUSR0000100; |
| 136 | |
| 137 | for (;;) { |
| 138 | slash += strspn(slash, "/"); |
| 139 | slash += strcspn(slash, "/"); |
| 140 | |
| 141 | finished = (*slash == '\0'); |
| 142 | *slash = '\0'; |
| 143 | |
| 144 | ishere = !stat(path, &sb); |
| 145 | if (finished && ishere) { |
| 146 | dobeep(); |
| 147 | ewprintf("Cannot create directory %s: file exists", |
| 148 | path); |
| 149 | return(FALSE0); |
| 150 | } else if (!finished && ishere && S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000)) { |
| 151 | *slash = '/'; |
| 152 | continue; |
| 153 | } |
| 154 | |
| 155 | if (mkdir(path, finished ? f_mode : dir_mode) == 0) { |
| 156 | if (f_mode > 0777 && chmod(path, f_mode) == -1) { |
| 157 | umask(oumask); |
| 158 | return (ABORT2); |
| 159 | } |
| 160 | } else { |
| 161 | if (!ishere || !S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000)) { |
| 162 | if (!ishere) { |
| 163 | dobeep(); |
| 164 | ewprintf("Creating directory: " |
| 165 | "permission denied, %s", path); |
| 166 | } else |
| 167 | eerase(); |
| 168 | |
| 169 | umask(oumask); |
| 170 | return (FALSE0); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | if (finished) |
| 175 | break; |
| 176 | |
| 177 | *slash = '/'; |
| 178 | } |
| 179 | |
| 180 | eerase(); |
| 181 | umask(oumask); |
| 182 | return (TRUE1); |
| 183 | } |