1 | /*
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2 | Unix SMB/CIFS implementation.
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3 | SMB client library implementation (Old interface compatibility)
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4 | Copyright (C) Andrew Tridgell 1998
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5 | Copyright (C) Richard Sharpe 2000
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6 | Copyright (C) John Terpstra 2000
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7 | Copyright (C) Tom Jansen (Ninja ISD) 2002
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8 | Copyright (C) Derrell Lipman 2003
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9 |
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10 | This program is free software; you can redistribute it and/or modify
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11 | it under the terms of the GNU General Public License as published by
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12 | the Free Software Foundation; either version 2 of the License, or
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13 | (at your option) any later version.
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14 |
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15 | This program is distributed in the hope that it will be useful,
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | GNU General Public License for more details.
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19 |
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20 | You should have received a copy of the GNU General Public License
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21 | along with this program; if not, write to the Free Software
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22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | */
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24 |
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25 |
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26 | #include "includes.h"
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27 |
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28 | #include "include/libsmb_internal.h"
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29 |
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30 | struct smbc_compat_fdlist {
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31 | SMBCFILE * file;
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32 | int fd;
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33 | struct smbc_compat_fdlist *next, *prev;
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34 | };
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35 |
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36 | static SMBCCTX * statcont = NULL;
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37 | static int smbc_compat_initialized = 0;
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38 | static int smbc_compat_nextfd = 0;
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39 | static struct smbc_compat_fdlist * smbc_compat_fd_in_use = NULL;
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40 | static struct smbc_compat_fdlist * smbc_compat_fd_avail = NULL;
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41 |
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42 | /* Find an fd and return the SMBCFILE * or NULL on failure */
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43 | static SMBCFILE * find_fd(int fd)
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44 | {
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45 | struct smbc_compat_fdlist * f = smbc_compat_fd_in_use;
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46 | while (f) {
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47 | if (f->fd == fd)
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48 | return f->file;
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49 | f = f->next;
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50 | }
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51 | return NULL;
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52 | }
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53 |
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54 | /* Add an fd, returns 0 on success, -1 on error with errno set */
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55 | static int add_fd(SMBCFILE * file)
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56 | {
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57 | struct smbc_compat_fdlist * f = smbc_compat_fd_avail;
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58 |
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59 | if (f) {
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60 | /* We found one that's available */
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61 | DLIST_REMOVE(smbc_compat_fd_avail, f);
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62 |
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63 | } else {
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64 | /*
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65 | * None were available, so allocate one. Keep the number of
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66 | * file descriptors determinate. This allows the application
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67 | * to allocate bitmaps or mapping of file descriptors based on
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68 | * a known maximum number of file descriptors that will ever
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69 | * be returned.
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70 | */
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71 | if (smbc_compat_nextfd >= FD_SETSIZE) {
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72 | errno = EMFILE;
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73 | return -1;
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74 | }
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75 |
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76 | f = SMB_MALLOC_P(struct smbc_compat_fdlist);
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77 | if (!f) {
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78 | errno = ENOMEM;
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79 | return -1;
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80 | }
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81 |
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82 | f->fd = SMBC_BASE_FD + smbc_compat_nextfd++;
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83 | }
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84 |
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85 | f->file = file;
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86 | DLIST_ADD(smbc_compat_fd_in_use, f);
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87 |
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88 | return f->fd;
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89 | }
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90 |
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91 |
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92 |
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93 | /* Delete an fd, returns 0 on success */
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94 | static int del_fd(int fd)
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95 | {
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96 | struct smbc_compat_fdlist * f = smbc_compat_fd_in_use;
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97 |
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98 | while (f) {
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99 | if (f->fd == fd)
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100 | break;
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101 | f = f->next;
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102 | }
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103 |
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104 | if (f) {
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105 | /* found */
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106 | DLIST_REMOVE(smbc_compat_fd_in_use, f);
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107 | f->file = NULL;
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108 | DLIST_ADD(smbc_compat_fd_avail, f);
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109 | return 0;
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110 | }
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111 | return 1;
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112 | }
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113 |
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114 |
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115 |
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116 | int smbc_init(smbc_get_auth_data_fn fn, int debug)
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117 | {
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118 | if (!smbc_compat_initialized) {
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119 | statcont = smbc_new_context();
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120 | if (!statcont)
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121 | return -1;
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122 |
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123 | statcont->debug = debug;
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124 | statcont->callbacks.auth_fn = fn;
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125 |
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126 | if (!smbc_init_context(statcont)) {
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127 | smbc_free_context(statcont, False);
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128 | return -1;
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129 | }
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130 |
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131 | smbc_compat_initialized = 1;
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132 |
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133 | return 0;
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134 | }
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135 | return 0;
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136 | }
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137 |
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138 |
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139 | SMBCCTX *smbc_set_context(SMBCCTX * context)
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140 | {
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141 | SMBCCTX *old_context = statcont;
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142 |
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143 | if (context) {
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144 | /* Save provided context. It must have been initialized! */
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145 | statcont = context;
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146 |
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147 | /* You'd better know what you're doing. We won't help you. */
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148 | smbc_compat_initialized = 1;
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149 | }
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150 |
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151 | return old_context;
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152 | }
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153 |
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154 |
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155 | int smbc_open(const char *furl, int flags, mode_t mode)
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156 | {
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157 | SMBCFILE * file;
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158 | int fd;
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159 |
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160 | file = (statcont->open)(statcont, furl, flags, mode);
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161 | if (!file)
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162 | return -1;
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163 |
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164 | fd = add_fd(file);
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165 | if (fd == -1)
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166 | (statcont->close_fn)(statcont, file);
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167 | return fd;
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168 | }
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169 |
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170 |
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171 | int smbc_creat(const char *furl, mode_t mode)
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172 | {
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173 | SMBCFILE * file;
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174 | int fd;
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175 |
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176 | file = (statcont->creat)(statcont, furl, mode);
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177 | if (!file)
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178 | return -1;
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179 |
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180 | fd = add_fd(file);
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181 | if (fd == -1) {
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182 | /* Hmm... should we delete the file too ? I guess we could try */
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183 | (statcont->close_fn)(statcont, file);
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184 | (statcont->unlink)(statcont, furl);
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185 | }
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186 | return fd;
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187 | }
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188 |
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189 |
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190 | ssize_t smbc_read(int fd, void *buf, size_t bufsize)
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191 | {
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192 | SMBCFILE * file = find_fd(fd);
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193 | return (statcont->read)(statcont, file, buf, bufsize);
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194 | }
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195 |
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196 | ssize_t smbc_write(int fd, void *buf, size_t bufsize)
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197 | {
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198 | SMBCFILE * file = find_fd(fd);
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199 | return (statcont->write)(statcont, file, buf, bufsize);
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200 | }
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201 |
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202 | off_t smbc_lseek(int fd, off_t offset, int whence)
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203 | {
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204 | SMBCFILE * file = find_fd(fd);
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205 | return (statcont->lseek)(statcont, file, offset, whence);
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206 | }
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207 |
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208 | int smbc_close(int fd)
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209 | {
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210 | SMBCFILE * file = find_fd(fd);
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211 | del_fd(fd);
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212 | return (statcont->close_fn)(statcont, file);
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213 | }
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214 |
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215 | int smbc_unlink(const char *fname)
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216 | {
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217 | return (statcont->unlink)(statcont, fname);
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218 | }
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219 |
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220 | int smbc_rename(const char *ourl, const char *nurl)
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221 | {
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222 | return (statcont->rename)(statcont, ourl, statcont, nurl);
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223 | }
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224 |
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225 | int smbc_opendir(const char *durl)
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226 | {
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227 | SMBCFILE * file;
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228 | int fd;
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229 |
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230 | file = (statcont->opendir)(statcont, durl);
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231 | if (!file)
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232 | return -1;
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233 |
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234 | fd = add_fd(file);
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235 | if (fd == -1)
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236 | (statcont->closedir)(statcont, file);
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237 |
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238 | return fd;
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239 | }
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240 |
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241 | int smbc_closedir(int dh)
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242 | {
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243 | SMBCFILE * file = find_fd(dh);
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244 | del_fd(dh);
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245 | return (statcont->closedir)(statcont, file);
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246 | }
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247 |
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248 | int smbc_getdents(unsigned int dh, struct smbc_dirent *dirp, int count)
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249 | {
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250 | SMBCFILE * file = find_fd(dh);
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251 | return (statcont->getdents)(statcont, file,dirp, count);
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252 | }
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253 |
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254 | struct smbc_dirent* smbc_readdir(unsigned int dh)
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255 | {
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256 | SMBCFILE * file = find_fd(dh);
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257 | return (statcont->readdir)(statcont, file);
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258 | }
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259 |
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260 | off_t smbc_telldir(int dh)
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261 | {
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262 | SMBCFILE * file = find_fd(dh);
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263 | return (statcont->telldir)(statcont, file);
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264 | }
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265 |
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266 | int smbc_lseekdir(int fd, off_t offset)
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267 | {
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268 | SMBCFILE * file = find_fd(fd);
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269 | return (statcont->lseekdir)(statcont, file, offset);
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270 | }
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271 |
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272 | int smbc_mkdir(const char *durl, mode_t mode)
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273 | {
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274 | return (statcont->mkdir)(statcont, durl, mode);
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275 | }
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276 |
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277 | int smbc_rmdir(const char *durl)
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278 | {
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279 | return (statcont->rmdir)(statcont, durl);
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280 | }
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281 |
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282 | int smbc_stat(const char *url, struct stat *st)
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283 | {
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284 | return (statcont->stat)(statcont, url, st);
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285 | }
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286 |
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287 | int smbc_fstat(int fd, struct stat *st)
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288 | {
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289 | SMBCFILE * file = find_fd(fd);
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290 | return (statcont->fstat)(statcont, file, st);
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291 | }
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292 |
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293 | int smbc_chmod(const char *url, mode_t mode)
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294 | {
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295 | return (statcont->chmod)(statcont, url, mode);
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296 | }
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297 |
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298 | int smbc_utimes(const char *fname, struct timeval *tbuf)
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299 | {
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300 | return (statcont->utimes)(statcont, fname, tbuf);
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301 | }
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302 |
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303 | #ifdef HAVE_UTIME_H
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304 | int smbc_utime(const char *fname, struct utimbuf *utbuf)
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305 | {
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306 | struct timeval tv[2];
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307 |
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308 | if (utbuf == NULL)
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309 | return (statcont->utimes)(statcont, fname, NULL);
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310 |
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311 | tv[0].tv_sec = utbuf->actime;
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312 | tv[1].tv_sec = utbuf->modtime;
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313 | tv[0].tv_usec = tv[1].tv_usec = 0;
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314 |
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315 | return (statcont->utimes)(statcont, fname, tv);
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316 | }
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317 | #endif
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318 |
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319 | int smbc_setxattr(const char *fname,
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320 | const char *name,
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321 | const void *value,
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322 | size_t size,
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323 | int flags)
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324 | {
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325 | return (statcont->setxattr)(statcont, fname, name, value, size, flags);
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326 | }
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327 |
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328 | int smbc_lsetxattr(const char *fname,
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329 | const char *name,
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330 | const void *value,
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331 | size_t size,
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332 | int flags)
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333 | {
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334 | return (statcont->setxattr)(statcont, fname, name, value, size, flags);
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335 | }
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336 |
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337 | int smbc_fsetxattr(int fd,
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338 | const char *name,
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339 | const void *value,
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340 | size_t size,
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341 | int flags)
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342 | {
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343 | SMBCFILE * file = find_fd(fd);
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344 | if (file == NULL) {
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345 | errno = EBADF;
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346 | return -1;
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347 | }
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348 | return (statcont->setxattr)(statcont, file->fname,
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349 | name, value, size, flags);
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350 | }
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351 |
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352 | int smbc_getxattr(const char *fname,
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353 | const char *name,
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354 | const void *value,
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355 | size_t size)
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356 | {
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357 | return (statcont->getxattr)(statcont, fname, name, value, size);
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358 | }
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359 |
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360 | int smbc_lgetxattr(const char *fname,
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361 | const char *name,
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362 | const void *value,
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363 | size_t size)
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364 | {
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365 | return (statcont->getxattr)(statcont, fname, name, value, size);
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366 | }
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367 |
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368 | int smbc_fgetxattr(int fd,
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369 | const char *name,
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370 | const void *value,
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371 | size_t size)
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372 | {
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373 | SMBCFILE * file = find_fd(fd);
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374 | if (file == NULL) {
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375 | errno = EBADF;
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376 | return -1;
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377 | }
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378 | return (statcont->getxattr)(statcont, file->fname, name, value, size);
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379 | }
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380 |
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381 | int smbc_removexattr(const char *fname,
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382 | const char *name)
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383 | {
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384 | return (statcont->removexattr)(statcont, fname, name);
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385 | }
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386 |
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387 | int smbc_lremovexattr(const char *fname,
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388 | const char *name)
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389 | {
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390 | return (statcont->removexattr)(statcont, fname, name);
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391 | }
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392 |
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393 | int smbc_fremovexattr(int fd,
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394 | const char *name)
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395 | {
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396 | SMBCFILE * file = find_fd(fd);
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397 | if (file == NULL) {
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398 | errno = EBADF;
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399 | return -1;
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400 | }
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401 | return (statcont->removexattr)(statcont, file->fname, name);
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402 | }
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403 |
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404 | int smbc_listxattr(const char *fname,
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405 | char *list,
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406 | size_t size)
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407 | {
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408 | return (statcont->listxattr)(statcont, fname, list, size);
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409 | }
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410 |
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411 | int smbc_llistxattr(const char *fname,
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412 | char *list,
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413 | size_t size)
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414 | {
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415 | return (statcont->listxattr)(statcont, fname, list, size);
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416 | }
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417 |
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418 | int smbc_flistxattr(int fd,
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419 | char *list,
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420 | size_t size)
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421 | {
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422 | SMBCFILE * file = find_fd(fd);
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423 | if (file == NULL) {
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424 | errno = EBADF;
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425 | return -1;
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426 | }
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427 | return (statcont->listxattr)(statcont, file->fname, list, size);
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428 | }
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429 |
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430 | int smbc_print_file(const char *fname, const char *printq)
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431 | {
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432 | return (statcont->print_file)(statcont, fname, statcont, printq);
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433 | }
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434 |
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435 | int smbc_open_print_job(const char *fname)
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436 | {
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437 | SMBCFILE * file = (statcont->open_print_job)(statcont, fname);
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438 | if (!file) return -1;
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439 | return file->cli_fd;
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440 | }
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441 |
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442 | int smbc_list_print_jobs(const char *purl, smbc_list_print_job_fn fn)
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443 | {
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444 | return (statcont->list_print_jobs)(statcont, purl, fn);
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445 | }
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446 |
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447 | int smbc_unlink_print_job(const char *purl, int id)
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448 | {
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449 | return (statcont->unlink_print_job)(statcont, purl, id);
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450 | }
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451 |
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452 |
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