Imported from /home/lorry/working-area/delta_ntp/ntp-dev-4.2.7p482.tar.gz.ntp-dev-4.2.7p482

1 files changed, 298 insertions, 0 deletions

diff --git a/sntp/libopts/init.c b/sntp/libopts/init.c
new file mode 100644
index 0000000..e038ed7
--- /dev/null
+++ b/sntp/libopts/init.c
@@ -0,0 +1,298 @@
+/**
+ * \file initialize.c
+ *
+ *  initialize the libopts data structures.
+ *
+ * @addtogroup autoopts
+ * @{
+ */
+/*
+ *  This file is part of AutoOpts, a companion to AutoGen.
+ *  AutoOpts is free software.
+ *  AutoOpts is Copyright (C) 1992-2014 by Bruce Korb - all rights reserved
+ *
+ *  AutoOpts is available under any one of two licenses.  The license
+ *  in use must be one of these two and the choice is under the control
+ *  of the user of the license.
+ *
+ *   The GNU Lesser General Public License, version 3 or later
+ *      See the files "COPYING.lgplv3" and "COPYING.gplv3"
+ *
+ *   The Modified Berkeley Software Distribution License
+ *      See the file "COPYING.mbsd"
+ *
+ *  These files have the following sha256 sums:
+ *
+ *  8584710e9b04216a394078dc156b781d0b47e1729104d666658aecef8ee32e95  COPYING.gplv3
+ *  4379e7444a0e2ce2b12dd6f5a52a27a4d02d39d247901d3285c88cf0d37f477b  COPYING.lgplv3
+ *  13aa749a5b0a454917a944ed8fffc530b784f5ead522b1aacaf4ec8aa55a6239  COPYING.mbsd
+ */
+
+/* = = = START-STATIC-FORWARD = = = */
+static tSuccess
+do_presets(tOptions * opts);
+/* = = = END-STATIC-FORWARD = = = */
+
+/**
+ *  Make sure the option descriptor is there and that we understand it.
+ *  This should be called from any user entry point where one needs to
+ *  worry about validity.  (Some entry points are free to assume that
+ *  the call is not the first to the library and, thus, that this has
+ *  already been called.)
+ *
+ *  Upon successful completion, pzProgName and pzProgPath are set.
+ *
+ *  @param[in,out] opts   program options descriptor
+ *  @param[in]     pname  name of program, from argv[]
+ *  @returns SUCCESS or FAILURE
+ */
+LOCAL tSuccess
+validate_struct(tOptions * opts, char const * pname)
+{
+    if (opts == NULL) {
+        fputs(zno_opt_arg, stderr);
+        return FAILURE;
+    }
+    print_exit = ((opts->fOptSet & OPTPROC_SHELL_OUTPUT) != 0);
+
+    /*
+     *  IF the client has enabled translation and the translation procedure
+     *  is available, then go do it.
+     */
+    if (  ((opts->fOptSet & OPTPROC_TRANSLATE) != 0)
+       && (opts->pTransProc != NULL)
+       && (option_xlateable_txt.field_ct != 0) ) {
+        /*
+         *  If option names are not to be translated at all, then do not do
+         *  it for configuration parsing either.  (That is the bit that really
+         *  gets tested anyway.)
+         */
+        if ((opts->fOptSet & OPTPROC_NO_XLAT_MASK) == OPTPROC_NXLAT_OPT)
+            opts->fOptSet |= OPTPROC_NXLAT_OPT_CFG;
+        (*opts->pTransProc)();
+    }
+
+    /*
+     *  IF the struct version is not the current, and also
+     *     either too large (?!) or too small,
+     *  THEN emit error message and fail-exit
+     */
+    if (  ( opts->structVersion  != OPTIONS_STRUCT_VERSION  )
+       && (  (opts->structVersion > OPTIONS_STRUCT_VERSION  )
+          || (opts->structVersion < OPTIONS_MINIMUM_VERSION )
+       )  )  {
+
+        static char const ao_ver_string[] =
+            STR(AO_CURRENT)":"STR(AO_REVISION)":"STR(AO_AGE)"\n";
+
+        fprintf(stderr, zwrong_ver, pname, NUM_TO_VER(opts->structVersion));
+        if (opts->structVersion > OPTIONS_STRUCT_VERSION )
+            fputs(ztoo_new, stderr);
+        else
+            fputs(ztoo_old, stderr);
+
+        fwrite(ao_ver_string, sizeof(ao_ver_string) - 1, 1, stderr);
+        return FAILURE;
+    }
+
+    /*
+     *  If the program name hasn't been set, then set the name and the path
+     *  and the set of equivalent characters.
+     */
+    if (opts->pzProgName == NULL) {
+        char const *  pz = strrchr(pname, DIRCH);
+        char const ** pp =
+            (char const **)(void **)&(opts->pzProgName);
+
+        if (pz != NULL)
+            *pp = pz+1;
+        else
+            *pp = pname;
+
+        pz = pathfind(getenv("PATH"), (char *)pname, "rx");
+        if (pz != NULL)
+            pname = (void *)pz;
+
+        pp  = (char const **)(void **)&(opts->pzProgPath);
+        *pp = pname;
+
+        /*
+         *  when comparing long names, these are equivalent
+         */
+        strequate(zSepChars);
+    }
+
+    return SUCCESS;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *
+ *  DO PRESETS
+ *
+ *  The next several routines do the immediate action pass on the command
+ *  line options, then the environment variables, then the config files in
+ *  reverse order.  Once done with that, the order is reversed and all
+ *  the config files and environment variables are processed again, this
+ *  time only processing the non-immediate action options.  do_presets()
+ *  will then return for optionProcess() to do the final pass on the command
+ *  line arguments.
+ */
+
+/**
+ *  scan the command line for immediate action options.
+ *  This is only called the first time through.
+ *  While this procedure is active, the OPTPROC_IMMEDIATE is true.
+ *
+ *  @param pOpts   program options descriptor
+ *  @returns SUCCESS or FAILURE
+ */
+LOCAL tSuccess
+immediate_opts(tOptions * opts)
+{
+    tSuccess  res;
+
+    opts->fOptSet  |= OPTPROC_IMMEDIATE;
+    opts->curOptIdx = 1;     /* start by skipping program name */
+    opts->pzCurOpt  = NULL;
+
+    /*
+     *  Examine all the options from the start.  We process any options that
+     *  are marked for immediate processing.
+     */
+    for (;;) {
+        tOptState opt_st = OPTSTATE_INITIALIZER(PRESET);
+
+        res = next_opt(opts, &opt_st);
+        switch (res) {
+        case FAILURE: goto   failed_option;
+        case PROBLEM: res = SUCCESS; goto leave;
+        case SUCCESS: break;
+        }
+
+        /*
+         *  IF this is an immediate-attribute option, then do it.
+         */
+        if (! DO_IMMEDIATELY(opt_st.flags))
+            continue;
+
+        if (! SUCCESSFUL(handle_opt(opts, &opt_st)))
+            break;
+    } failed_option:;
+
+    if ((opts->fOptSet & OPTPROC_ERRSTOP) != 0)
+        (*opts->pUsageProc)(opts, EXIT_FAILURE);
+
+ leave:
+
+    opts->fOptSet &= ~OPTPROC_IMMEDIATE;
+    return res;
+}
+
+/**
+ *  check for preset values from a config files or envrionment variables
+ *
+ * @param[in,out] opts  the structure with the option names to check
+ */
+static tSuccess
+do_presets(tOptions * opts)
+{
+    tOptDesc * od = NULL;
+
+    if (! SUCCESSFUL(immediate_opts(opts)))
+        return FAILURE;
+
+    /*
+     *  IF this option set has a --save-opts option, then it also
+     *  has a --load-opts option.  See if a command line option has disabled
+     *  option presetting.
+     */
+    if (  (opts->specOptIdx.save_opts != NO_EQUIVALENT)
+       && (opts->specOptIdx.save_opts != 0)) {
+        od = opts->pOptDesc + opts->specOptIdx.save_opts + 1;
+        if (DISABLED_OPT(od))
+            return SUCCESS;
+    }
+
+    /*
+     *  Until we return from this procedure, disable non-presettable opts
+     */
+    opts->fOptSet |= OPTPROC_PRESETTING;
+    /*
+     *  IF there are no config files,
+     *  THEN do any environment presets and leave.
+     */
+    if (opts->papzHomeList == NULL) {
+        env_presets(opts, ENV_ALL);
+    }
+    else {
+        env_presets(opts, ENV_IMM);
+
+        /*
+         *  Check to see if environment variables have disabled presetting.
+         */
+        if ((od != NULL) && ! DISABLED_OPT(od))
+            intern_file_load(opts);
+
+        /*
+         *  ${PROGRAM_LOAD_OPTS} value of "no" cannot disable other environment
+         *  variable options.  Only the loading of .rc files.
+         */
+        env_presets(opts, ENV_NON_IMM);
+    }
+    opts->fOptSet &= ~OPTPROC_PRESETTING;
+
+    return SUCCESS;
+}
+
+/**
+ * AutoOpts initialization
+ *
+ * @param[in,out] opts  the structure to initialize
+ * @param[in]     a_ct  program argument count
+ * @param[in]     a_v   program argument vector
+ */
+LOCAL bool
+ao_initialize(tOptions * opts, int a_ct, char ** a_v)
+{
+    if ((opts->fOptSet & OPTPROC_INITDONE) != 0)
+        return true;
+
+    opts->origArgCt   = (unsigned int)a_ct;
+    opts->origArgVect = a_v;
+    opts->fOptSet    |= OPTPROC_INITDONE;
+
+    if (HAS_pzPkgDataDir(opts))
+        program_pkgdatadir = opts->pzPkgDataDir;
+
+    if (! SUCCESSFUL(do_presets(opts)))
+        return false;
+
+    /*
+     *  IF option name conversion was suppressed but it is not suppressed
+     *  for the command line, then it's time to translate option names.
+     *  Usage text will not get retranslated.
+     */
+    if (  ((opts->fOptSet & OPTPROC_TRANSLATE) != 0)
+       && (opts->pTransProc != NULL)
+       && ((opts->fOptSet & OPTPROC_NO_XLAT_MASK) == OPTPROC_NXLAT_OPT_CFG)
+       )  {
+        opts->fOptSet &= ~OPTPROC_NXLAT_OPT_CFG;
+        (*opts->pTransProc)();
+    }
+
+    if ((opts->fOptSet & OPTPROC_REORDER) != 0)
+        optionSort(opts);
+
+    opts->curOptIdx   = 1;
+    opts->pzCurOpt    = NULL;
+    return true;
+}
+
+/** @}
+ *
+ * Local Variables:
+ * mode: C
+ * c-file-style: "stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * end of autoopts/initialize.c */