Bookmarks

/* * Bookmarks server (chat version). * * NOTE: this code illustrates how to make a dpi-program. * * Copyright 2002-2004 Jorge Arellano Cid * * 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. * */ /* Todo: this server is not assembling the received packets. * This means it currently expects dillo to send full dpi tags * within the socket; if that fails, everything stops. * This is not hard to fix, mainly is a matter of expecting the * final '>' of a tag. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dpiutil.h" #include /* This one os tricky, some sources state it should include the byte * for the terminating NULL, and others say it shouldn't. */ # define D_SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \ + strlen ((ptr)->sun_path)) typedef struct { gint key; gint section; gchar *url; gchar *title; } BmRec; typedef struct { gint section; gchar *title; gint o_sec; /* private, for normalization */ } BmSec; /* * Local data */ static char *Header = "Content-type: text/html\n\n"; static char *BmFile = NULL; static time_t BmFileTimeStamp = 0; static GSList *B_bms = NULL; static gint bm_key = 0; static GSList *B_secs = NULL; static gint sec_key = 0; static int MODIFY_PAGE_NUM = 1; /* * Forward declarations */ /* -- HTML templates ------------------------------------------------------- */ char *mainpage_header = "\n" "\n" "Bookmarks\n" "\n" "\n" "\n" " \n" "

\n" " \n" " \n" " \n" " \n" "

Bookmarks::

\n" " [modify]\n" "

\n" "
\n"; char *modifypage_header = "\n" "\n" "Bookmarks\n" "\n" "\n" "\n" " \n" "

\n" " \n" " \n" " \n" "

Bookmarks :: modify

\n" "\n" "

\n" "\n" " \n" "

\n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" "

Select an operation

, mark its operands, and

\n"; char *mainpage_sections_header = "\n" " \n" " \n" " \n" "

\n" " \n" " \n"; char *modifypage_sections_header = "

\n" " \n" "

Sections:

\n" " \n" "

\n" " \n" " \n"; char *mainpage_sections_item = " \n"; char *modifypage_sections_item = " \n"; char *mainpage_sections_footer = "

\n" " \n" "

Sections:

\n" " %s

\n" " \n" " " " \n" "

\n"; char *modifypage_sections_footer = "

\n"; char *mainpage_middle1 = "

\n"; char *modifypage_middle1 = "

\n"; char *mainpage_section_card_header = " \n" " \n" " \n" " \n" " \n"; char *modifypage_section_card_header = " \n" "

\n" " %s

\n" " \n" " \n" " \n"; char *mainpage_section_card_item = " \n"; char *modifypage_section_card_item = " \n" " \n"; char *mainpage_section_card_footer = "

\n" " %s
\n" " %s
\n" " %s

\n" "

\n"; char *modifypage_section_card_footer = "

\n" "

\n"; char *mainpage_footer = " \n" " \n" "\n" "\n" "\n"; char *modifypage_footer = " \n" " \n" "\n" "

\n" "\n" "\n"; /* ------------------------------------------------------------------------- */ char *modifypage_add_section_page = "\n" "\n" "Bookmarks\n" "\n" "\n" "\n" " \n" "

\n" " \n" "

Modify bookmarks:: add section\n" "

\n" "
\n" "\n" "\n" "\n" "\n"; /* ------------------------------------------------------------------------- */ char *modifypage_update_header = "\n" "\n" "Bookmarks\n" "\n" "\n" "\n" " \n" "

\n" " \n" "

Modify bookmarks:: update\n" "

\n" "
\n" "\n" "\n" "\n"; /* ------------------------------------------------------------------------- */ char *modifypage_add_url = "\n" "\n" "Bookmarks\n" "\n" "\n" "\n" " \n" "

\n" " \n" "

Modify bookmarks:: add url\n" "

\n" "
\n" "\n" "\n" "\n"; /* ------------------------------------------------------------------------- */ /* * Return a new string with spaces changed with */ static char *make_one_line_str(char *str) { char *new_str; int i, j, n; for (i = 0, n = 0; str[i]; ++i) if (str[i] == ' ') ++n; new_str = g_new(char, strlen(str) + 6*n + 1); new_str[0] = 0; for (i = 0, j = 0; str[i]; ++i) { if (str[i] == ' ') { strcpy(new_str + j, " "); j += 6; } else { new_str[j] = str[i]; new_str[++j] = 0; } } return new_str; } /* * Use character stuffing for characters given in 'esc_set'. * Return value: New stuffed string. */ static gchar *Stuff_chars(const gchar *str, const gchar *esc_set) { gint i; gchar *p, *sstr = NULL; if ((p = strpbrk(str, esc_set))) { /* start stuffing */ GString *gstr = g_string_new(str); for (i = p - str; gstr->str[i]; ++i) if (strchr(esc_set, gstr->str[i])) { g_string_insert_c(gstr, i, gstr->str[i]); ++i; } sstr = gstr->str; g_string_free(gstr, FALSE); } return (sstr ? sstr : g_strdup(str)); } /* * Given an urlencoded string, return it to the original version. */ static void Unencode_str(char *e_str) { char *p, *e; for (p = e = e_str; *e; e++, p++) { if (*e == '+') { *p = ' '; } else if (*e == '%') { if (g_strncasecmp(e, "%0D%0A", 6) == 0) { *p = '\n'; e += 5; } else { *p = (isdigit(e[1]) ? (e[1] - '0') : (e[1] - 'A' + 10)) * 16 + (isdigit(e[2]) ? (e[2] - '0') : (e[2] - 'A' + 10)); e += 2; } } else { *p = *e; } } *p = 0; } /* * Read a line of text up to the newline character, store it into a newly * allocated string and return it. */ static char *Get_line(FILE *stream) { guint i, size = 64; int ch; char *buf; buf = g_new(char, size); for (i = 0; (ch = fgetc(stream)) != EOF; ++i) { if (i + 1 == size) { size *= 2; buf = g_realloc(buf, size); } if ((buf[i] = ch) == '\n' && ++i) break; } buf[i] = 0; if (i > 0) { buf = g_realloc(buf, i + 1); } else { g_free(buf); buf = NULL; } return buf; } /* * Send a short message to dillo's status bar. */ static int Bmsrv_dpi_send_status_msg(SockHandler *sh, char *str) { int st; GString *gstr = g_string_new(""); gchar *sstr = Stuff_chars(str, "'\""); g_string_sprintf(gstr, "", sstr); st = sock_handler_write_str(sh, gstr->str, 1); g_string_free(gstr, TRUE); g_free(sstr); return st; } /* -- ADT for bookmarks ---------------------------------------------------- */ /* * Compare function for searching a bookmark by its key */ static gint Bms_key_cmp(gconstpointer node, gconstpointer key) { return ( GPOINTER_TO_INT(key) != ((BmRec *)node)->key ); } /* * Compare function for searching a bookmark by section */ static gint Bms_bysec_cmp(gconstpointer node, gconstpointer key) { return ( GPOINTER_TO_INT(key) != ((BmRec *)node)->section ); } /* * Compare function for searching a section by its number */ static gint Bms_sec_cmp(gconstpointer node, gconstpointer key) { return ( GPOINTER_TO_INT(key) != ((BmSec *)node)->section ); } /* * Return the Bm record by key */ static BmRec *Bms_get(gint key) { GSList *list; list = g_slist_find_custom(B_bms, GINT_TO_POINTER(key), Bms_key_cmp); return (list) ? list->data : NULL; } /* * Return the Section record by key */ static BmSec *Bms_get_sec(gint key) { GSList *list; list = g_slist_find_custom(B_secs, GINT_TO_POINTER(key), Bms_sec_cmp); return (list) ? list->data : NULL; } /* * Add a bookmark */ static void Bms_add(gint section, char *url, char *title) { BmRec *node; node = g_new(BmRec, 1); node->key = ++bm_key; node->section = section; node->url = g_strdup(url); node->title = g_strdup(title); B_bms = g_slist_append(B_bms, node); } /* * Add a section */ static void Bms_sec_add(char *title) { BmSec *node; node = g_new(BmSec, 1); node->section = sec_key++; node->title = g_strdup(title); B_secs = g_slist_append(B_secs, node); } /* * Delete a bookmark by its key */ static void Bms_del(gint key) { GSList *list; BmRec *node; list = g_slist_find_custom(B_bms, GINT_TO_POINTER(key), Bms_key_cmp); if (list) { node = list->data; g_free(node->title); g_free(node->url); g_free(list->data); B_bms = g_slist_remove(B_bms, list->data); } if (B_bms == NULL) bm_key = 0; } /* * Delete a section and its bookmarks by section number */ static void Bms_sec_del(gint section) { GSList *list; BmSec *sec_node; BmRec *bm_node; list = g_slist_find_custom(B_secs, GINT_TO_POINTER(section), Bms_sec_cmp); if (list) { sec_node = list->data; g_free(sec_node->title); g_free(list->data); B_secs = g_slist_remove(B_secs, list->data); /* iterate B_bms and remove those that match the section */ while ((list = g_slist_find_custom(B_bms, GINT_TO_POINTER(section), Bms_bysec_cmp))) { bm_node = list->data; Bms_del(bm_node->key); } } if (B_secs == NULL) sec_key = 0; } /* * Move a bookmark to another section */ static void Bms_move(gint key, gint target_section) { GSList *list; list = g_slist_find_custom(B_bms, GINT_TO_POINTER(key), Bms_key_cmp); if (list) { BmRec *node = list->data; node->section = target_section; } } /* * Update a bookmark title by key */ static void Bms_update_title(gint key, gchar *n_title) { GSList *list; list = g_slist_find_custom(B_bms, GINT_TO_POINTER(key), Bms_key_cmp); if (list) { BmRec *node = list->data; if (strcmp(node->title, n_title)) { g_free(node->title); node->title = g_strdup(n_title); } } } /* * Update a section title by key */ static void Bms_update_sec_title(gint key, gchar *n_title) { GSList *list; list = g_slist_find_custom(B_secs, GINT_TO_POINTER(key), Bms_sec_cmp); if (list) { BmSec *node = list->data; if (strcmp(node->title, n_title)) { g_free(node->title); node->title = g_strdup(n_title); } } } /* * Free all the bookmarks data (bookmarks and sections) */ static void Bms_free(void) { BmRec *bm_node; BmSec *sec_node; /* free B_bms */ while (B_bms) { bm_node = B_bms->data; Bms_del(bm_node->key); } /* free B_secs */ while (B_secs) { sec_node = B_secs->data; Bms_sec_del(sec_node->section); } } /* * Enforce increasing correlative section numbers with no jumps. */ static void Bms_normalize(void) { BmRec *bm_node; BmSec *sec_node; GSList *list1, *list2; gint n; /* we need at least one section */ if (!B_secs) Bms_sec_add("Unclassified"); /* make correlative section numbers */ n = 0; for (list1 = B_secs; list1; list1 = list1->next) { sec_node = list1->data; sec_node->o_sec = sec_node->section; sec_node->section = n++; } /* iterate B_secs and make the changes in B_bms */ for (list1 = B_secs; list1; list1 = list1->next) { sec_node = list1->data; if (sec_node->section != sec_node->o_sec) { /* update section numbers */ for (list2 = B_bms; list2; list2 = list2->next) { bm_node = list2->data; if (bm_node->section == sec_node->o_sec) bm_node->section = sec_node->section; } } } } /* -- Load bookmarks file -------------------------------------------------- */ /* * If there's no "bm.txt", create one from "bookmarks.html". */ static void Bms_check_import(void) { gchar *OldBmFile; char *cmd1 = "echo \":s0: Unclassified\" > %s"; char *cmd2 = "grep -i \"href\" %s | " "sed -e 's/