From 9f153fbfec0fb9c9ce38e749a7c6f4a5e115d4e9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 19 Sep 2024 06:14:33 +0200
Subject: Merging upstream version 4.4.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 fileset.c | 205 +++++++++++++++++++++++++++++++++++++-------------------------
 1 file changed, 122 insertions(+), 83 deletions(-)

(limited to 'fileset.c')

diff --git a/fileset.c b/fileset.c
index f137de3b..2a0b252b 100644
--- a/fileset.c
+++ b/fileset.c
@@ -23,6 +23,8 @@
 #include <wsutil/filesystem.h>
 #include <wsutil/ws_assert.h>
 
+#include <wiretap/wtap.h>
+
 #include <epan/strutil.h>
 
 #include "fileset.h"
@@ -37,7 +39,7 @@ typedef struct _fileset {
  *
  * XXX This should probably be per-main-window instead of global.
  */
-static fileset set = { NULL, NULL};
+static fileset set;
 
 /*
  * Given a stat structure, get the creation time of the file if available,
@@ -58,109 +60,146 @@ static fileset set = { NULL, NULL};
 #endif /* _WIN32 */
 
 /* is this a probable file of a file set (does the naming pattern match)? */
-gboolean
-fileset_filename_match_pattern(const char *fname)
+fileset_match_t
+fileset_filename_match_pattern(const char *fname, char **prefix, char **suffix, char **time)
 {
-    char        *pfx;
-    size_t       baselen;
-    size_t      minlen = strlen("_00001_20050418010750");
+    char        *sfx;
     char        *filename;
+    fileset_match_t ret = FILESET_NO_MATCH;
+    static char *pattern = "(?P<prefix>.*)_\\d{5}_(?P<time>\\d{14})$";
+    static char *pattern2 = "(?P<prefix>.*)_(?P<time>\\d{14})_\\d{5}$";
+    static GRegex *regex = NULL;
+    static GRegex *regex2 = NULL;
+
+    if (regex == NULL) {
+        GError *gerr = NULL;
+        regex = g_regex_new(pattern,
+                        (GRegexCompileFlags)(G_REGEX_OPTIMIZE | G_REGEX_ANCHORED),
+                        G_REGEX_MATCH_ANCHORED, &gerr);
+        if (gerr) {
+                ws_warning("failed to compile regex: %s", gerr->message);
+                g_error_free(gerr);
+                regex = NULL;
+                return ret;
+        }
+    }
 
+    if (regex2 == NULL) {
+        GError *gerr = NULL;
+        regex2 = g_regex_new(pattern2,
+                        (GRegexCompileFlags)(G_REGEX_OPTIMIZE | G_REGEX_ANCHORED),
+                        G_REGEX_MATCH_ANCHORED, &gerr);
+        if (gerr) {
+                ws_warning("failed to compile regex: %s", gerr->message);
+                g_error_free(gerr);
+                regex2 = NULL;
+                return ret;
+        }
+    }
 
     /* d:\dir1\test_00001_20050418010750.cap */
-    filename = g_strdup(get_basename(fname));
+    filename = g_path_get_basename(fname);
 
     /* test_00001_20050418010750.cap */
-    pfx = strrchr(filename, '.');
-    if(pfx == NULL) {  /* suffix is optional */
-        pfx = filename + strlen(filename);
+    sfx = strrchr(filename, '.');
+    if (sfx != NULL) {
+        *sfx = '\0';
+        GSList *compression_type_extensions = wtap_get_all_compression_type_extensions_list();
+        char *ext = g_ascii_strdown(sfx + 1, -1);
+        for (GSList *compression_extension = compression_type_extensions;
+                compression_extension != NULL;
+                compression_extension = g_slist_next(compression_extension)) {
+            if (g_strcmp0(ext, (const char*)compression_extension->data) == 0) {
+                sfx = strrchr(filename, '.');
+                if (sfx != NULL) {
+                    *sfx = '\0';
+                }
+                break;
+            }
+        }
+        g_free(ext);
+        g_slist_free(compression_type_extensions);
+    } else { /* suffix is optional */
+        sfx = filename + strlen(filename);
     }
-    /* test_00001_20050418010750 */
-    *pfx = '\0';
 
-    /* filename long enough? */
-    baselen = strlen(filename);
-    if(baselen < minlen) {
-        g_free(filename);
-        return FALSE;
-    }
+    /* test_00001_20050418010750 */
 
-    /* there must be two underscores at special places */
-    if(filename[baselen-minlen] != '_' || filename[baselen-minlen+6] != '_') {
-        g_free(filename);
-        return FALSE;
+    GMatchInfo *match_info;
+    g_regex_match(regex, filename, 0, &match_info);
+    if (g_match_info_matches(match_info)) {
+        if (prefix) {
+            *prefix = g_match_info_fetch_named(match_info, "prefix");
+        }
+        if (time) {
+            *time = g_match_info_fetch_named(match_info, "time");
+        }
+        if (suffix) {
+            *suffix = g_strdup(sfx);
+        }
+        ret = FILESET_NUM_TIME;
     }
+    g_match_info_free(match_info);
 
-    /* replace the two underscores by digits */
-    filename[baselen-minlen] = '0';
-    filename[baselen-minlen+6] = '0';
-
-    /* we should have only digits now */
-    while(minlen--) {
-        baselen--;
-
-        if(!g_ascii_isdigit( filename[baselen])) {
-            g_free(filename);
-            return FALSE;
+    if (ret == FILESET_NO_MATCH) {
+        g_regex_match(regex2, filename, 0, &match_info);
+        if (g_match_info_matches(match_info)) {
+            if (prefix) {
+                *prefix = g_match_info_fetch_named(match_info, "prefix");
+            }
+            if (time) {
+                *time = g_match_info_fetch_named(match_info, "time");
+            }
+            if (suffix) {
+                *suffix = g_strdup(sfx);
+            }
+            ret = FILESET_TIME_NUM;
         }
+        g_match_info_free(match_info);
     }
 
     g_free(filename);
 
-    /* ok, seems to be good */
-    return TRUE;
+    return ret;
 }
 
 
-/* test, if both files could be in the same file set */
-/* (the filenames must already be in correct shape) */
-static gboolean
+/* test if both files could be in the same file set */
+/* (fname2 must already be in correct shape) */
+static bool
 fileset_is_file_in_set(const char *fname1, const char *fname2)
 {
     char        *pfx1;
     char        *pfx2;
-    char        *dup_f1;
-    char        *dup_f2;
-    size_t       minlen = strlen("_00001_20050418010750");
-
+    char        *sfx1;
+    char        *sfx2;
+    fileset_match_t match1;
+    fileset_match_t match2;
+    bool        ret = false;
+
+    match1 = fileset_filename_match_pattern(fname1, &pfx1, &sfx1, NULL);
+    if (match1 == FILESET_NO_MATCH) {
+        return false;
+    }
 
+    match2 = fileset_filename_match_pattern(fname2, &pfx2, &sfx2, NULL);
     /* just to be sure ... */
-    ws_assert(fileset_filename_match_pattern(fname1));
-    ws_assert(fileset_filename_match_pattern(fname2));
-
-    dup_f1 = g_strdup(fname1);
-    dup_f2 = g_strdup(fname2);
-
-    pfx1 = strrchr(dup_f1, '.');
-    pfx2 = strrchr(dup_f2, '.');
-    /* suffix is optional */
-    if (!pfx1) pfx1 = dup_f1 + strlen(dup_f1);
-    if (!pfx2) pfx2 = dup_f2 + strlen(dup_f2);
-
-    /* the optional suffix (file extension) must be equal */
-    if(strcmp(pfx1, pfx2) != 0) {
-        g_free(dup_f1);
-        g_free(dup_f2);
-        return FALSE;
+    ws_assert(match2 != FILESET_NO_MATCH);
+    if (match1 == match2 && g_strcmp0(pfx1, pfx2) == 0 && g_strcmp0(sfx1, sfx2) == 0) {
+        ret = true;
     }
 
-    *(pfx1-minlen) = '\0';
-    *(pfx2-minlen) = '\0';
-
-    if(strcmp(dup_f1, dup_f2) != 0) {
-        g_free(dup_f1);
-        g_free(dup_f2);
-        return FALSE;
-    }
+    g_free(pfx1);
+    g_free(pfx2);
+    g_free(sfx1);
+    g_free(sfx2);
 
-    g_free(dup_f1);
-    g_free(dup_f2);
-    return TRUE;
+    return ret;
 }
 
 /* GCompareFunc helper for g_list_find_custom() */
-static gint
-fileset_find_by_path(gconstpointer a, gconstpointer b)
+static int
+fileset_find_by_path(const void *a, const void *b)
 {
     const fileset_entry *entry;
     const char *path;
@@ -205,7 +244,7 @@ fileset_update_file(const char *path)
 
 /* we know this file is part of the set, so add it */
 static fileset_entry *
-fileset_add_file(const char *dirname, const char *fname, gboolean current)
+fileset_add_file(const char *dirname, const char *fname, bool current)
 {
     int fh, result;
     ws_statb64 buf;
@@ -245,8 +284,8 @@ fileset_add_file(const char *dirname, const char *fname, gboolean current)
 
 
 /* compare two list entries by creation date/time (through filename) */
-static gint
-fileset_sort_compare(gconstpointer a, gconstpointer b)
+static int
+fileset_sort_compare(const void *a, const void *b)
 {
     const fileset_entry *entry_a = (const fileset_entry *)a;
     const fileset_entry *entry_b = (const fileset_entry *)b;
@@ -279,7 +318,7 @@ fileset_add_dir(const char *fname, void *window)
     WS_DIRENT     *file;            /* current file */
     const char    *name;
     GString       *dirname;
-    gchar         *fname_dup;
+    char          *fname_dup;
 
 
     /* get (convert) directory name, but don't touch the given string */
@@ -292,12 +331,12 @@ fileset_add_dir(const char *fname, void *window)
     dirname = g_string_append_c(dirname, G_DIR_SEPARATOR);
 
     /* is the current file probably a part of any fileset? */
-    if(fileset_filename_match_pattern(fname)) {
+    if(fileset_filename_match_pattern(fname, NULL, NULL, NULL)) {
         /* yes, go through the files in the directory and check if the file in question is part of the current file set */
         if ((dir = ws_dir_open(dirname->str, 0, NULL)) != NULL) {
             while ((file = ws_dir_read_name(dir)) != NULL) {
                 name = ws_dir_get_name(file);
-                if(fileset_filename_match_pattern(name) && fileset_is_file_in_set(name, get_basename(fname))) {
+                if(fileset_is_file_in_set(name, get_basename(fname))) {
                     fileset_add_file(dirname->str, name, strcmp(name, get_basename(fname))== 0 /* current */);
                 }
             } /* while */
@@ -306,7 +345,7 @@ fileset_add_dir(const char *fname, void *window)
         } /* if */
     } else {
         /* no, this is a "standalone file", just add this one */
-        fileset_add_file(dirname->str, get_basename(fname), TRUE /* current */);
+        fileset_add_file(dirname->str, get_basename(fname), true /* current */);
         /* don't add the file to the dialog here, this will be done in fileset_update_dlg() below */
     }
 
@@ -392,13 +431,13 @@ fileset_get_previous(void)
 
 
 /* delete a single entry */
-static void fileset_entry_delete(gpointer data, gpointer user_data _U_)
+static void fileset_entry_delete(void *data, void *user_data _U_)
 {
     fileset_entry *entry = (fileset_entry *)data;
 
-    g_free( (gpointer) entry->fullname);
+    g_free( (void *) entry->fullname);
     entry->fullname = NULL;
-    g_free( (gpointer) entry->name);
+    g_free( (void *) entry->name);
     entry->name = NULL;
     g_free(entry);
 }
@@ -416,7 +455,7 @@ void fileset_delete(void)
 
     /* free the rest */
     if(set.dirname) {
-        g_free( (gpointer) set.dirname);
+        g_free( (void *) set.dirname);
         set.dirname = NULL;
     }
 }
-- 
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