diff options
Diffstat (limited to 'board/hymod/env.c')
| -rw-r--r-- | board/hymod/env.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/board/hymod/env.c b/board/hymod/env.c new file mode 100644 index 0000000..f58aec2 --- /dev/null +++ b/board/hymod/env.c @@ -0,0 +1,236 @@ +/* + * (C) Copyright 2003 + * Murray Jensen, CSIRO-MIT, <Murray.Jensen@csiro.au> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +/* imports from fetch.c */ +extern int fetch_and_parse (char *, ulong, int (*)(uchar *, uchar *)); + +/* this is relative to the root of the server's tftp directory */ +static char *def_global_env_path = "/hymod/global_env"; + +static int +env_callback (uchar *name, uchar *value) +{ + DECLARE_GLOBAL_DATA_PTR; + + hymod_conf_t *cp = &gd->bd->bi_hymod_conf; + char ov[CFG_CBSIZE], nv[CFG_CBSIZE], *p, *q, *nn, c, *curver, *newver; + int override = 1, append = 0, remove = 0, nnl, ovl, nvl; + + nn = name; + + if (*nn == '-') { + override = 0; + nn++; + } + + while (*nn == ' ' || *nn == '\t') + nn++; + + if ((nnl = strlen (nn)) == 0) { + printf ("Empty name in global env file\n"); + return (0); + } + + if ((c = nn[nnl - 1]) == '+' || c == '-') { + if (c == '+') + append = 1; + else + remove = 1; + nn[--nnl] = '\0'; + } + + while (nnl > 0 && ((c = nn[nnl - 1]) == ' ' || c == '\t')) + nn[--nnl] = '\0'; + if (nnl == 0) { + printf ("Empty name in global env file\n"); + return (0); + } + + p = value; + q = nv; + + while ((c = *p) == ' ' || c == '\t') + p++; + + nvl = strlen (p); + while (nvl > 0 && ((c = p[nvl - 1]) == ' ' || c == '\t')) + p[--nvl] = '\0'; + + while ((*q = *p++) != '\0') { + if (*q == '%') { + switch (*p++) { + + case '\0': /* whoops - back up */ + p--; + break; + + case '%': /* a single percent character */ + q++; + break; + + case 's': /* main board serial number as string */ + q += sprintf (q, "%010lu", + cp->main.eeprom.serno); + break; + + case 'S': /* main board serial number as number */ + q += sprintf (q, "%lu", cp->main.eeprom.serno); + break; + + default: /* ignore any others */ + break; + } + } + else + q++; + } + + if ((nvl = q - nv) == 0) { + setenv (nn, NULL); + return (1); + } + + if ((curver = getenv ("global_env_version")) == NULL) + curver = "unknown"; + + if ((newver = getenv ("new_genv_version")) == NULL || \ + strcmp (curver, newver) == 0) { + if (strcmp (nn, "version") == 0) + setenv ("new_genv_version", nv); + return (1); + } + + if ((p = getenv (nn)) != NULL) { + + strcpy (ov, p); + ovl = strlen (ov); + + if (append) { + + if (strstr (ov, nv) == NULL) { + + printf ("Appending '%s' to env var '%s'\n", + nv, nn); + + while (nvl >= 0) { + nv[ovl + 1 + nvl] = nv[nvl]; + nvl--; + } + + nv[ovl] = ' '; + + while (--ovl >= 0) + nv[ovl] = ov[ovl]; + + setenv (nn, nv); + } + + return (1); + } + + if (remove) { + + if (strstr (ov, nv) != NULL) { + + printf ("Removing '%s' from env var '%s'\n", + nv, nn); + + while ((p = strstr (ov, nv)) != NULL) { + q = p + nvl; + if (*q == ' ') + q++; + strcpy(p, q); + } + + setenv (nn, ov); + } + + return (1); + } + + if (!override || strcmp (ov, nv) == 0) + return (1); + + printf ("Re-setting env cmd '%s' from '%s' to '%s'\n", + nn, ov, nv); + } + else + printf ("Setting env cmd '%s' to '%s'\n", nn, nv); + + setenv (nn, nv); + return (1); +} + +void +hymod_check_env (void) +{ + char *p, *path, *curver, *newver; + int firsttime = 0, needsave = 0; + + if (getenv ("global_env_loaded") == NULL) { + puts ("*** global environment has never been loaded\n"); + puts ("*** fetching from server"); + firsttime = 1; + } + else if ((p = getenv ("always_check_env")) != NULL && + strcmp (p, "yes") == 0) + puts ("*** checking for updated global environment"); + else + return; + + puts (" (Control-C to Abort)\n"); + + if ((path = getenv ("global_env_path")) == NULL || *path == '\0') + path = def_global_env_path; + + if (fetch_and_parse (path, CFG_LOAD_ADDR, env_callback) == 0) { + puts ("*** Fetch of global environment failed!\n"); + return; + } + + if ((newver = getenv ("new_genv_version")) == NULL) { + puts ("*** Version number not set - contents ignored!\n"); + return; + } + + if ((curver = getenv ("global_env_version")) == NULL || \ + strcmp (curver, newver) != 0) { + setenv ("global_env_version", newver); + needsave = 1; + } + else + printf ("*** Global environment up-to-date (ver %s)\n", curver); + + setenv ("new_genv_version", NULL); + + if (firsttime) { + setenv ("global_env_loaded", "yes"); + needsave = 1; + } + + if (needsave) + puts ("\n*** Remember to run the 'saveenv' " + "command to save the changes\n\n"); +} |