X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=sbr%2Fcontext_read.c;h=1e1a84e36e8cd280e65419b5cc2cb67f02d35b82;hp=6a1eea1259cfbaa94ac75a41232ff8abb3387525;hb=ced6090a330d3d83d0bce709f756aa3d7d65fea4;hpb=b9d1fc0c85e9bd18e5e768913ba2c0a00f19876c diff --git a/sbr/context_read.c b/sbr/context_read.c index 6a1eea1..1e1a84e 100644 --- a/sbr/context_read.c +++ b/sbr/context_read.c @@ -1,140 +1,142 @@ /* - * context_read.c -- find and read profile and context files - * - * $Id$ - * - * This code is Copyright (c) 2002, by the authors of nmh. See the - * COPYRIGHT file in the root directory of the nmh distribution for - * complete copyright information. - * - * This function must be called early on in any nmh utility, and - * may only be called once. It does the following: - * - * o Sets the global variable "mypath" to the home directory path. - * - * o Sets the global variable "defpath" to the absolute path of - * the profile file. - * - * o Reads in the profile file. Bails out if it can't. - * - * o Makes sure that the mail directory exists, prompting for - * creation if it doesn't. - * - * o Reads the context file either as set by the MHCONTEXT - * environment variable or by the profile. - */ - -#include /* mh internals */ -#include /* system call errors */ -#include /* structure for getpwuid() results */ +** context_read.c -- find and read profile and context files +** +** This code is Copyright (c) 2002, by the authors of nmh. See the +** COPYRIGHT file in the root directory of the nmh distribution for +** complete copyright information. +** +** This function must be called early on in any nmh utility, and +** may only be called once. It does the following: +** +** o Sets the global variable "mypath" to the home directory path. +** +** o Sets the global variable "defpath" to the absolute path of +** the profile file. +** +** o Reads in the profile file. Bails out if it can't. +** +** o Makes sure that the mail directory exists, prompting for +** creation if it doesn't. +** +** o Reads the context file either as set by the MHCONTEXT +** environment variable or by the profile. +*/ + +#include /* mh internals */ +#include /* system call errors */ +#include /* structure for getpwuid() results */ void context_read (void) { - char buf[BUFSIZ]; /* path name buffer */ - char *cp; /* miscellaneous pointer */ - char *nd; /* nmh directory pointer */ - struct stat st; /* stat() results */ - register struct passwd *pw; /* getpwuid() results */ - register FILE *ib; /* profile and context file pointer */ - - /* - * Find user's home directory. Try the HOME environment variable first, - * the home directory field in the password file if that's not found. - */ - - if ((mypath = getenv("HOME")) == (char *)0) { - if ((pw = getpwuid(getuid())) == (struct passwd *)0 || *pw->pw_dir == '\0') - adios(NULL, "cannot determine your home directory"); - else - mypath = pw->pw_dir; - } - - /* - * Find and read user's profile. Check for the existence of an MH environment - * variable first with non-empty contents. Convert any relative path name - * found there to an absolute one. Look for the profile in the user's home - * directory if the MH environment variable isn't set. - */ - - if ((cp = getenv("MH")) && *cp != '\0') { + char buf[BUFSIZ]; /* path name buffer */ + char *cp; /* miscellaneous pointer */ + char *nd; /* nmh directory pointer */ + struct stat st; /* stat() results */ + register struct passwd *pw; /* getpwuid() results */ + register FILE *ib; /* profile and context file pointer */ + + /* + ** If this routine _is_ called again (despite the wanings in the + ** comments above), return immediately. + */ + if ( m_defs != 0 ) + return; + + /* + ** Find user's home directory. Try the HOME environment variable first, + ** the home directory field in the password file if that's not found. + */ + if ((mypath = getenv("HOME")) == (char *)0) { + if ((pw = getpwuid(getuid())) == (struct passwd *)0 || *pw->pw_dir == '\0') + adios(NULL, "cannot determine your home directory"); + else + mypath = pw->pw_dir; + } + + /* + ** Find and read user's profile. Check for the existence of + ** an MH environment variable first with non-empty contents. + ** Convert any relative path name found there to an absolute one. + ** Look for the profile in the user's home directory if the MH + ** environment variable isn't set. + */ + + if ((cp = getenv("MH")) && *cp != '\0') { defpath = path(cp, TFILE); if (stat(defpath, &st) != -1 && (st.st_mode & S_IFREG) == 0) adios((char *)0, "`%s' specified by your MH environment variable is not a normal file", cp); if ((ib = fopen(defpath, "r")) == (FILE *)0) - adios((char *)0, "unable to read the `%s' profile specified by your MH environment variable", defpath); - } - else { - defpath = concat(mypath, "/", mh_profile, NULL); - - if ((ib = fopen(defpath, "r")) == (FILE *)0) - adios((char *)0, "Doesn't look like nmh is installed. Run install-mh to do so."); - - cp = mh_profile; - } - - readconfig (&m_defs, ib, cp, 0); - fclose (ib); - - /* - * Find the user's nmh directory, which is specified by the "path" profile component. - * Convert a relative path name to an absolute one rooted in the home directory. - */ + adios((char *)0, "unable to read the `%s' profile specified by your MH environment variable", defpath); + } else { + defpath = concat(mypath, "/", mh_profile, NULL); - if ((cp = context_find ("path")) == (char *)0) - adios(NULL, "Your %s file does not contain a path entry.", defpath); + if ((ib = fopen(defpath, "r")) == (FILE *)0) + adios((char *)0, "Doesn't look like nmh is installed. Run install-mh to do so."); - if (*cp == '\0') - adios(NULL, "Your `%s' profile file does not contain a valid path entry.", defpath); + cp = mh_profile; + } - if (*cp != '/') - (void)snprintf (nd = buf, sizeof(buf), "%s/%s", mypath, cp); - else - nd = cp; + readconfig (&m_defs, ib, cp, 0); + fclose (ib); - if (stat(nd, &st) == -1) { - if (errno != ENOENT) - adios (nd, "error opening"); + /* + ** Find the user's nmh directory, which is specified by the "path" + ** profile component. Convert a relative path name to an absolute + ** one rooted in the home directory. + */ - cp = concat ("Your MH-directory \"", nd, "\" doesn't exist; Create it? ", NULL); + if ((cp = context_find ("path")) == (char *)0) + adios(NULL, "Your %s file does not contain a path entry.", defpath); - if (!getanswer(cp)) - adios (NULL, "unable to access MH-directory \"%s\"", nd); + if (*cp == '\0') + adios(NULL, "Your `%s' profile file does not contain a valid path entry.", defpath); - free (cp); - - if (!makedir (nd)) - adios (NULL, "unable to create", nd); - } - - else if ((st.st_mode & S_IFDIR) == 0) - adios ((char *)0, "`%s' is not a directory", nd); - - /* - * Open and read user's context file. The name of the context file comes from the - * profile unless overridden by the MHCONTEXT environment variable. - */ - - if ((cp = getenv ("MHCONTEXT")) == (char *)0 || *cp == '\0') - cp = context; + if (*cp != '/') + (void)snprintf (nd = buf, sizeof(buf), "%s/%s", mypath, cp); + else + nd = cp; + + if (stat(nd, &st) == -1) { + if (errno != ENOENT) + adios (nd, "error opening"); + cp = concat ("Your MH-directory \"", nd, "\" doesn't exist; Create it? ", NULL); + if (!getanswer(cp)) + adios (NULL, "unable to access MH-directory \"%s\"", nd); + free (cp); + if (!makedir (nd)) + adios (NULL, "unable to create %s", nd); + } else if ((st.st_mode & S_IFDIR) == 0) + adios ((char *)0, "`%s' is not a directory", nd); + + /* + ** Open and read user's context file. The name of the context + ** file comes from the profile unless overridden by the MHCONTEXT + ** environment variable. + */ + + if ((cp = getenv ("MHCONTEXT")) == (char *)0 || *cp == '\0') + cp = context; + + /* + ** context is NULL if context_foil() was called to disable use + ** of context We also support users setting explicitly setting + ** MHCONTEXT to /dev/null. (if this wasn't specialcased then the + ** locking would be liable to fail) + */ + if (!cp || (strcmp(cp,"/dev/null") == 0)) { + ctxpath = NULL; + return; + } + + ctxpath = getcpy (m_maildir (cp)); + + if ((ib = lkfopen (ctxpath, "r"))) { + readconfig ((struct node **) 0, ib, cp, 1); + lkfclose (ib, ctxpath); + } - /* context is NULL if context_foil() was called to disable use of context - * We also support users setting explicitly setting MHCONTEXT to /dev/null. - * (if this wasn't specialcased then the locking would be liable to fail) - */ - if (!cp || (strcmp(cp,"/dev/null") == 0)) { - ctxpath = NULL; return; - } - - ctxpath = getcpy (m_maildir (cp)); - - if ((ib = lkfopen (ctxpath, "r"))) { - readconfig ((struct node **) 0, ib, cp, 1); - lkfclose (ib, ctxpath); - } - - return; }