cmd-source-file.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2008 Tiago Cunha <me@tiagocunha.org>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20
  21 #include <errno.h>
  22 #include <glob.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <vis.h>
  26
  27 #include "tmux.h"
  28
  29 /*
  30  * Sources a configuration file.
  31  */
  32
  33 static enum cmd_retval  cmd_source_file_exec(struct cmd *, struct cmdq_item *);
  34
  35 const struct cmd_entry cmd_source_file_entry = {
  36         .name = "source-file",
  37         .alias = "source",
  38
  39         .args = { "t:Fnqv", 1, -1, NULL },
  40         .usage = "[-Fnqv] " CMD_TARGET_PANE_USAGE " path ...",
  41
  42         .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
  43
  44         .flags = 0,
  45         .exec = cmd_source_file_exec
  46 };
  47
  48 struct cmd_source_file_data {
  49         struct cmdq_item         *item;
  50         int                       flags;
  51
  52         struct cmdq_item         *after;
  53         enum cmd_retval           retval;
  54
  55         u_int                     current;
  56         char                    **files;
  57         u_int                     nfiles;
  58 };
  59
  60 static enum cmd_retval
  61 cmd_source_file_complete_cb(struct cmdq_item *item, __unused void *data)
  62 {
  63         cfg_print_causes(item);
  64         return (CMD_RETURN_NORMAL);
  65 }
  66
  67 static void
  68 cmd_source_file_complete(struct client *c, struct cmd_source_file_data *cdata)
  69 {
  70         struct cmdq_item        *new_item;
  71         u_int                    i;
  72
  73         if (cfg_finished) {
  74                 if (cdata->retval == CMD_RETURN_ERROR &&
  75                     c != NULL &&
  76                     c->session == NULL)
  77                         c->retval = 1;
  78                 new_item = cmdq_get_callback(cmd_source_file_complete_cb, NULL);
  79                 cmdq_insert_after(cdata->after, new_item);
  80         }
  81
  82         for (i = 0; i < cdata->nfiles; i++)
  83                 free(cdata->files[i]);
  84         free(cdata->files);
  85         free(cdata);
  86 }
  87
  88 static void
  89 cmd_source_file_done(struct client *c, const char *path, int error,
  90     int closed, struct evbuffer *buffer, void *data)
  91 {
  92         struct cmd_source_file_data     *cdata = data;
  93         struct cmdq_item                *item = cdata->item;
  94         void                            *bdata = EVBUFFER_DATA(buffer);
  95         size_t                           bsize = EVBUFFER_LENGTH(buffer);
  96         u_int                            n;
  97         struct cmdq_item                *new_item;
  98         struct cmd_find_state           *target = cmdq_get_target(item);
  99
 100         if (!closed)
 101                 return;
 102
 103         if (error != 0)
 104                 cmdq_error(item, "%s: %s", path, strerror(error));
 105         else if (bsize != 0) {
 106                 if (load_cfg_from_buffer(bdata, bsize, path, c, cdata->after,
 107                     target, cdata->flags, &new_item) < 0)
 108                         cdata->retval = CMD_RETURN_ERROR;
 109                 else if (new_item != NULL)
 110                         cdata->after = new_item;
 111         }
 112
 113         n = ++cdata->current;
 114         if (n < cdata->nfiles)
 115                 file_read(c, cdata->files[n], cmd_source_file_done, cdata);
 116         else {
 117                 cmd_source_file_complete(c, cdata);
 118                 cmdq_continue(item);
 119         }
 120 }
 121
 122 static void
 123 cmd_source_file_add(struct cmd_source_file_data *cdata, const char *path)
 124 {
 125         char    resolved[PATH_MAX];
 126
 127         if (realpath(path, resolved) == NULL) {
 128                 log_debug("%s: realpath(\"%s\") failed: %s", __func__,
 129                         path, strerror(errno));
 130         } else
 131                 path = resolved;
 132
 133         log_debug("%s: %s", __func__, path);
 134         cdata->files = xreallocarray(cdata->files, cdata->nfiles + 1,
 135             sizeof *cdata->files);
 136         cdata->files[cdata->nfiles++] = xstrdup(path);
 137 }
 138
 139 static enum cmd_retval
 140 cmd_source_file_exec(struct cmd *self, struct cmdq_item *item)
 141 {
 142         struct args                     *args = cmd_get_args(self);
 143         struct cmd_source_file_data     *cdata;
 144         struct client                   *c = cmdq_get_client(item);
 145         enum cmd_retval                  retval = CMD_RETURN_NORMAL;
 146         char                            *pattern, *cwd, *expanded = NULL;
 147         const char                      *path, *error;
 148         glob_t                           g;
 149         int                              result;
 150         u_int                            i, j;
 151
 152         cdata = xcalloc(1, sizeof *cdata);
 153         cdata->item = item;
 154
 155         if (args_has(args, 'q'))
 156                 cdata->flags |= CMD_PARSE_QUIET;
 157         if (args_has(args, 'n'))
 158                 cdata->flags |= CMD_PARSE_PARSEONLY;
 159         if (args_has(args, 'v'))
 160                 cdata->flags |= CMD_PARSE_VERBOSE;
 161
 162         utf8_stravis(&cwd, server_client_get_cwd(c, NULL), VIS_GLOB);
 163
 164         for (i = 0; i < args_count(args); i++) {
 165                 path = args_string(args, i);
 166                 if (args_has(args, 'F')) {
 167                         free(expanded);
 168                         expanded = format_single_from_target(item, path);
 169                         path = expanded;
 170                 }
 171                 if (strcmp(path, "-") == 0) {
 172                         cmd_source_file_add(cdata, "-");
 173                         continue;
 174                 }
 175
 176                 if (*path == '/')
 177                         pattern = xstrdup(path);
 178                 else
 179                         xasprintf(&pattern, "%s/%s", cwd, path);
 180                 log_debug("%s: %s", __func__, pattern);
 181
 182                 if ((result = glob(pattern, 0, NULL, &g)) != 0) {
 183                         if (result != GLOB_NOMATCH ||
 184                             (~cdata->flags & CMD_PARSE_QUIET)) {
 185                                 if (result == GLOB_NOMATCH)
 186                                         error = strerror(ENOENT);
 187                                 else if (result == GLOB_NOSPACE)
 188                                         error = strerror(ENOMEM);
 189                                 else
 190                                         error = strerror(EINVAL);
 191                                 cmdq_error(item, "%s: %s", path, error);
 192                                 retval = CMD_RETURN_ERROR;
 193                         }
 194                         globfree(&g);
 195                         free(pattern);
 196                         continue;
 197                 }
 198                 free(pattern);
 199
 200                 for (j = 0; j < g.gl_pathc; j++)
 201                         cmd_source_file_add(cdata, g.gl_pathv[j]);
 202                 globfree(&g);
 203         }
 204         free(expanded);
 205
 206         cdata->after = item;
 207         cdata->retval = retval;
 208
 209         if (cdata->nfiles != 0) {
 210                 file_read(c, cdata->files[0], cmd_source_file_done, cdata);
 211                 retval = CMD_RETURN_WAIT;
 212         } else
 213                 cmd_source_file_complete(c, cdata);
 214
 215         free(cwd);
 216         return (retval);
 217 }