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
  26 #include "tmux.h"
  27
  28 /*
  29  * Sources a configuration file.
  30  */
  31
  32 static enum cmd_retval  cmd_source_file_exec(struct cmd *, struct cmdq_item *);
  33
  34 const struct cmd_entry cmd_source_file_entry = {
  35         .name = "source-file",
  36         .alias = "source",
  37
  38         .args = { "t:Fnqv", 1, -1, NULL },
  39         .usage = "[-Fnqv] " CMD_TARGET_PANE_USAGE " path ...",
  40
  41         .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
  42
  43         .flags = 0,
  44         .exec = cmd_source_file_exec
  45 };
  46
  47 struct cmd_source_file_data {
  48         struct cmdq_item         *item;
  49         int                       flags;
  50
  51         struct cmdq_item         *after;
  52         enum cmd_retval           retval;
  53
  54         u_int                     current;
  55         char                    **files;
  56         u_int                     nfiles;
  57 };
  58
  59 static enum cmd_retval
  60 cmd_source_file_complete_cb(struct cmdq_item *item, __unused void *data)
  61 {
  62         cfg_print_causes(item);
  63         return (CMD_RETURN_NORMAL);
  64 }
  65
  66 static void
  67 cmd_source_file_complete(struct client *c, struct cmd_source_file_data *cdata)
  68 {
  69         struct cmdq_item        *new_item;
  70         u_int                    i;
  71
  72         if (cfg_finished) {
  73                 if (cdata->retval == CMD_RETURN_ERROR &&
  74                     c != NULL &&
  75                     c->session == NULL)
  76                         c->retval = 1;
  77                 new_item = cmdq_get_callback(cmd_source_file_complete_cb, NULL);
  78                 cmdq_insert_after(cdata->after, new_item);
  79         }
  80
  81         for (i = 0; i < cdata->nfiles; i++)
  82                 free(cdata->files[i]);
  83         free(cdata->files);
  84         free(cdata);
  85 }
  86
  87 static void
  88 cmd_source_file_done(struct client *c, const char *path, int error,
  89     int closed, struct evbuffer *buffer, void *data)
  90 {
  91         struct cmd_source_file_data     *cdata = data;
  92         struct cmdq_item                *item = cdata->item;
  93         void                            *bdata = EVBUFFER_DATA(buffer);
  94         size_t                           bsize = EVBUFFER_LENGTH(buffer);
  95         u_int                            n;
  96         struct cmdq_item                *new_item;
  97         struct cmd_find_state           *target = cmdq_get_target(item);
  98
  99         if (!closed)
 100                 return;
 101
 102         if (error != 0)
 103                 cmdq_error(item, "%s: %s", path, strerror(error));
 104         else if (bsize != 0) {
 105                 if (load_cfg_from_buffer(bdata, bsize, path, c, cdata->after,
 106                     target, cdata->flags, &new_item) < 0)
 107                         cdata->retval = CMD_RETURN_ERROR;
 108                 else if (new_item != NULL)
 109                         cdata->after = new_item;
 110         }
 111
 112         n = ++cdata->current;
 113         if (n < cdata->nfiles)
 114                 file_read(c, cdata->files[n], cmd_source_file_done, cdata);
 115         else {
 116                 cmd_source_file_complete(c, cdata);
 117                 cmdq_continue(item);
 118         }
 119 }
 120
 121 static void
 122 cmd_source_file_add(struct cmd_source_file_data *cdata, const char *path)
 123 {
 124         char    resolved[PATH_MAX];
 125
 126         if (realpath(path, resolved) == NULL) {
 127                 log_debug("%s: realpath(\"%s\") failed: %s", __func__,
 128                         path, strerror(errno));
 129         } else
 130                 path = resolved;
 131
 132         log_debug("%s: %s", __func__, path);
 133         cdata->files = xreallocarray(cdata->files, cdata->nfiles + 1,
 134             sizeof *cdata->files);
 135         cdata->files[cdata->nfiles++] = xstrdup(path);
 136 }
 137
 138 static enum cmd_retval
 139 cmd_source_file_exec(struct cmd *self, struct cmdq_item *item)
 140 {
 141         struct args                     *args = cmd_get_args(self);
 142         struct cmd_source_file_data     *cdata;
 143         struct client                   *c = cmdq_get_client(item);
 144         enum cmd_retval                  retval = CMD_RETURN_NORMAL;
 145         char                            *pattern, *cwd, *expanded = NULL;
 146         const char                      *path, *error;
 147         glob_t                           g;
 148         int                              result;
 149         u_int                            i, j;
 150
 151         cdata = xcalloc(1, sizeof *cdata);
 152         cdata->item = item;
 153
 154         if (args_has(args, 'q'))
 155                 cdata->flags |= CMD_PARSE_QUIET;
 156         if (args_has(args, 'n'))
 157                 cdata->flags |= CMD_PARSE_PARSEONLY;
 158         if (args_has(args, 'v'))
 159                 cdata->flags |= CMD_PARSE_VERBOSE;
 160
 161         utf8_stravis(&cwd, server_client_get_cwd(c, NULL), VIS_GLOB);
 162
 163         for (i = 0; i < args_count(args); i++) {
 164                 path = args_string(args, i);
 165                 if (args_has(args, 'F')) {
 166                         free(expanded);
 167                         expanded = format_single_from_target(item, path);
 168                         path = expanded;
 169                 }
 170                 if (strcmp(path, "-") == 0) {
 171                         cmd_source_file_add(cdata, "-");
 172                         continue;
 173                 }
 174
 175                 if (*path == '/')
 176                         pattern = xstrdup(path);
 177                 else
 178                         xasprintf(&pattern, "%s/%s", cwd, path);
 179                 log_debug("%s: %s", __func__, pattern);
 180
 181                 if ((result = glob(pattern, 0, NULL, &g)) != 0) {
 182                         if (result != GLOB_NOMATCH ||
 183                             (~cdata->flags & CMD_PARSE_QUIET)) {
 184                                 if (result == GLOB_NOMATCH)
 185                                         error = strerror(ENOENT);
 186                                 else if (result == GLOB_NOSPACE)
 187                                         error = strerror(ENOMEM);
 188                                 else
 189                                         error = strerror(EINVAL);
 190                                 cmdq_error(item, "%s: %s", path, error);
 191                                 retval = CMD_RETURN_ERROR;
 192                         }
 193                         globfree(&g);
 194                         free(pattern);
 195                         continue;
 196                 }
 197                 free(pattern);
 198
 199                 for (j = 0; j < g.gl_pathc; j++)
 200                         cmd_source_file_add(cdata, g.gl_pathv[j]);
 201                 globfree(&g);
 202         }
 203         free(expanded);
 204
 205         cdata->after = item;
 206         cdata->retval = retval;
 207
 208         if (cdata->nfiles != 0) {
 209                 file_read(c, cdata->files[0], cmd_source_file_done, cdata);
 210                 retval = CMD_RETURN_WAIT;
 211         } else
 212                 cmd_source_file_complete(c, cdata);
 213
 214         free(cwd);
 215         return (retval);
 216 }