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Diffstat (limited to 'src/postconf/postconf_main.c')
| -rw-r--r-- | src/postconf/postconf_main.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/postconf/postconf_main.c b/src/postconf/postconf_main.c new file mode 100644 index 0000000..8e6e226 --- /dev/null +++ b/src/postconf/postconf_main.c @@ -0,0 +1,220 @@ +/*++ +/* NAME +/* postconf_main 3 +/* SUMMARY +/* basic support for main.cf +/* SYNOPSIS +/* #include <postconf.h> +/* +/* void pcf_read_parameters() +/* +/* void pcf_show_parameters(fp, mode, param_class, names) +/* VSTREAM *fp; +/* int mode; +/* int param_class; +/* char **names; +/* DESCRIPTION +/* pcf_read_parameters() reads parameters from main.cf. +/* +/* pcf_set_parameters() takes an array of \fIname=value\fR +/* pairs and overrides settings read with pcf_read_parameters(). +/* +/* pcf_show_parameters() writes main.cf parameters to the +/* specified output stream. +/* +/* Arguments: +/* .IP fp +/* Output stream. +/* .IP mode +/* Bit-wise OR of zero or more of the following: +/* .RS +/* .IP PCF_FOLD_LINE +/* Fold long lines. +/* .IP PCF_SHOW_DEFS +/* Output default parameter values. +/* .IP PCF_SHOW_NONDEF +/* Output explicit settings only. +/* .IP PCF_HIDE_NAME +/* Output parameter values without the "name =" prefix. +/* .IP PCF_SHOW_EVAL +/* Expand $name in parameter values. +/* .RE +/* .IP param_class +/* Bit-wise OR of one or more of the following: +/* .RS +/* .IP PCF_PARAM_FLAG_BUILTIN +/* Show built-in parameters. +/* .IP PCF_PARAM_FLAG_SERVICE +/* Show service-defined parameters. +/* .IP PCF_PARAM_FLAG_USER +/* Show user-defined parameters. +/* .RE +/* .IP names +/* List of zero or more parameter names. If the list is empty, +/* output all parameters. +/* DIAGNOSTICS +/* Problems are reported to the standard error stream. +/* LICENSE +/* .ad +/* .fi +/* The Secure Mailer license must be distributed with this software. +/* AUTHOR(S) +/* Wietse Venema +/* IBM T.J. Watson Research +/* P.O. Box 704 +/* Yorktown Heights, NY 10598, USA +/* +/* Wietse Venema +/* Google, Inc. +/* 111 8th Avenue +/* New York, NY 10011, USA +/*--*/ + +/* System library. */ + +#include <sys_defs.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> + +/* Utility library. */ + +#include <msg.h> +#include <mymalloc.h> +#include <vstream.h> +#include <vstring.h> +#include <readlline.h> +#include <dict.h> +#include <stringops.h> +#include <htable.h> +#include <mac_expand.h> + +/* Global library. */ + +#include <mail_params.h> +#include <mail_conf.h> + +/* Application-specific. */ + +#include <postconf.h> + +#define STR(x) vstring_str(x) + +/* pcf_read_parameters - read parameter info from file */ + +void pcf_read_parameters(void) +{ + char *path; + + /* + * A direct rip-off of mail_conf_read(). XXX Avoid code duplication by + * better code decomposition. + */ + pcf_set_config_dir(); + path = concatenate(var_config_dir, "/", MAIN_CONF_FILE, (char *) 0); + if (dict_load_file_xt(CONFIG_DICT, path) == 0) + msg_fatal("open %s: %m", path); + myfree(path); +} + +/* pcf_set_parameters - add or override name=value pairs */ + +void pcf_set_parameters(char **name_val_array) +{ + char *name, *value, *junk; + const char *err; + char **cpp; + + for (cpp = name_val_array; *cpp; cpp++) { + junk = mystrdup(*cpp); + if ((err = split_nameval(junk, &name, &value)) != 0) + msg_fatal("invalid parameter override: %s: %s", *cpp, err); + mail_conf_update(name, value); + myfree(junk); + } +} + +/* pcf_print_parameter - show specific parameter */ + +static void pcf_print_parameter(VSTREAM *fp, int mode, const char *name, + PCF_PARAM_NODE *node) +{ + static VSTRING *exp_buf = 0; + const char *value; + + if (exp_buf == 0) + exp_buf = vstring_alloc(100); + + /* + * Use the default or actual value. + */ + value = pcf_lookup_parameter_value(mode, name, (PCF_MASTER_ENT *) 0, node); + + /* + * Optionally expand $name in the parameter value. Print the result with + * or without the name= prefix. + */ + if (value != 0) { + if (mode & PCF_HIDE_VALUE) { + pcf_print_line(fp, mode, "%s\n", name); + } else { + if ((mode & PCF_SHOW_EVAL) != 0 && PCF_RAW_PARAMETER(node) == 0) + value = pcf_expand_parameter_value(exp_buf, mode, value, + (PCF_MASTER_ENT *) 0); + if ((mode & PCF_HIDE_NAME) == 0) { + pcf_print_line(fp, mode, "%s = %s\n", name, value); + } else { + pcf_print_line(fp, mode, "%s\n", value); + } + } + if (msg_verbose) + vstream_fflush(fp); + } +} + +/* pcf_comp_names - qsort helper */ + +static int pcf_comp_names(const void *a, const void *b) +{ + PCF_PARAM_INFO **ap = (PCF_PARAM_INFO **) a; + PCF_PARAM_INFO **bp = (PCF_PARAM_INFO **) b; + + return (strcmp(PCF_PARAM_INFO_NAME(ap[0]), + PCF_PARAM_INFO_NAME(bp[0]))); +} + +/* pcf_show_parameters - show parameter info */ + +void pcf_show_parameters(VSTREAM *fp, int mode, int param_class, char **names) +{ + PCF_PARAM_INFO **list; + PCF_PARAM_INFO **ht; + char **namep; + PCF_PARAM_NODE *node; + + /* + * Show all parameters. + */ + if (*names == 0) { + list = PCF_PARAM_TABLE_LIST(pcf_param_table); + qsort((void *) list, pcf_param_table->used, sizeof(*list), + pcf_comp_names); + for (ht = list; *ht; ht++) + if (param_class & PCF_PARAM_INFO_NODE(*ht)->flags) + pcf_print_parameter(fp, mode, PCF_PARAM_INFO_NAME(*ht), + PCF_PARAM_INFO_NODE(*ht)); + myfree((void *) list); + return; + } + + /* + * Show named parameters. + */ + for (namep = names; *namep; namep++) { + if ((node = PCF_PARAM_TABLE_FIND(pcf_param_table, *namep)) == 0) { + msg_warn("%s: unknown parameter", *namep); + } else { + pcf_print_parameter(fp, mode, *namep, node); + } + } +} |