diff --git a/render/directory.c b/render/directory.c index 70b754d0a..a931144c3 100644 --- a/render/directory.c +++ b/render/directory.c @@ -39,16 +39,60 @@ #define MAX_LENGTH 2048 -static const char header[] = - "\n" +#define NO_NAME_COLUMN 1 +#define NO_TYPE_COLUMN 1 << 1 +#define NO_SIZE_COLUMN 1 << 2 +#define NO_DATE_COLUMN 1 << 3 +#define NO_TIME_COLUMN 1 << 4 + +static const char footer[] = "\n\n\n"; + +static const char* dirlist_generate_top(void); +static bool dirlist_generate_hide_columns(int flags, char *buffer, + int buffer_length); +static bool dirlist_generate_title(char *title, char *buffer, + int buffer_length); +static bool dirlist_generate_parent_link(char *parent, char *buffer, + int buffer_length); +static bool dirlist_generate_headings(char *buffer, int buffer_length); +static bool dirlist_generate_row(bool even, bool directory, char *url, + char *name, char *type, long long size, char *date, + char *time, char *buffer, int buffer_length); +static const char* dirlist_generate_bottom(void); + +static int dirlist_filesize_calculate(unsigned long *bytesize); +static int dirlist_filesize_value(unsigned long bytesize); +static char* dirlist_filesize_unit(unsigned long bytesize); + + +/** + * Generates the top part of an HTML directroy listing page + * + * \return Top of directory listing HTML + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +const char* dirlist_generate_top(void) +{ + return "\n" "\n" "\n" - "\n"; -static const char footer[] = "</div>\n</body>\n</html>\n"; - -static char sizeunits[][7] = {"Bytes", "kBytes", "MBytes", "GBytes"}; - -static int filesize_calculate(unsigned long *bytesize); -static int filesize_value(unsigned long bytesize); -static char* filesize_unit(unsigned long bytesize); - - -bool directory_create(struct content *c, const struct http_parameter *params) { - if (!html_create(c, params)) - /* html_create() must have broadcast MSG_ERROR already, so we - * don't need to. */ - return false; - - binding_parse_chunk(c->data.html.parser_binding, - (uint8_t *) header, sizeof(header) - 1); - - return true; + "padding-right: 0; }\n"; } + +/** + * Generates the part of an HTML directory listing page that can suppress + * particular columns + * + * \param flags flags for which cols to suppress. 0 to suppress none + * \param buffer buffer to fill with generated HTML + * \param buffer_length maximum size of buffer + * \return true iff buffer filled without error + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +bool dirlist_generate_hide_columns(int flags, char *buffer, int buffer_length) +{ + int error = snprintf(buffer, buffer_length, + "%s\n%s\n%s\n%s\n%s\n", + (flags & NO_NAME_COLUMN) ? + "span.name { display: none; }\n" : "", + (flags & NO_TYPE_COLUMN) ? + "span.type { display: none; }\n" : "", + (flags & NO_SIZE_COLUMN) ? + "span.size { display: none; }\n" : "", + (flags & NO_DATE_COLUMN) ? + "span.date { display: none; }\n" : "", + (flags & NO_TIME_COLUMN) ? + "span.time { display: none; }\n" : ""); + if (error < 0 || error >= buffer_length) + /* Error or buffer too small */ + return false; + else + /* OK */ + return true; +} + + +/** + * Generates the part of an HTML directory listing page that contains the title + * + * \param title title to use, gets prefixed by "Index of " + * \param buffer buffer to fill with generated HTML + * \param buffer_length maximum size of buffer + * \return true iff buffer filled without error + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +bool dirlist_generate_title(char *title, char *buffer, int buffer_length) +{ + int error = snprintf(buffer, buffer_length, + "</style>\n" + "<title>Index of %s\n" + "\n" + "\n" + "

Index of %s

\n", + title, title); + if (error < 0 || error >= buffer_length) + /* Error or buffer too small */ + return false; + else + /* OK */ + return true; +} + + +/** + * Generates the part of an HTML directory listing page that links to the parent + * directory + * + * \param parent url of parent directory + * \param buffer buffer to fill with generated HTML + * \param buffer_length maximum size of buffer + * \return true iff buffer filled without error + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +bool dirlist_generate_parent_link(char *parent, char *buffer, int buffer_length) +{ + int error = snprintf(buffer, buffer_length, + "

%s

", + parent, messages_get("FileParent")); + if (error < 0 || error >= buffer_length) + /* Error or buffer too small */ + return false; + else + /* OK */ + return true; +} + + +/** + * Generates the part of an HTML directory listing page that displays the column + * headings + * + * \param buffer buffer to fill with generated HTML + * \param buffer_length maximum size of buffer + * \return true iff buffer filled without error + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +bool dirlist_generate_headings(char *buffer, int buffer_length) +{ + int error = snprintf(buffer, buffer_length, + "
\n" + "%s " + "%s " + "%s" + " " + "%s " + "%s\n", + messages_get("FileName"), messages_get("FileType"), + messages_get("FileSize"), messages_get("FileDate"), + messages_get("FileTime")); + if (error < 0 || error >= buffer_length) + /* Error or buffer too small */ + return false; + else + /* OK */ + return true; +} + + +/** + * Generates the part of an HTML directory listing page that displays a row + * in the directory contents table + * + * \param even evenness of row number, for alternate row colouring + * \param directory whether this row is for a directory (or a file) + * \param url url for row entry + * \param name name of row entry + * \param type MIME type of row entry + * \param size size of row entry. If negative, size is left blank + * \param date date row entry was last modified + * \param time time row entry was last modified + * \param buffer buffer to fill with generated HTML + * \param buffer_length maximum size of buffer + * \return true iff buffer filled without error + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +bool dirlist_generate_row(bool even, bool directory, char *url, char *name, + char *type, long long size, char *date, char *time, + char *buffer, int buffer_length) +{ + const char *unit; + char size_string[100]; + + if (size < 0) { + unit = ""; + strncpy(size_string, "", sizeof size_string); + } else { + unit = messages_get(dirlist_filesize_unit((unsigned long)size)); + snprintf(size_string, sizeof size_string, "%d", + dirlist_filesize_value((unsigned long)size)); + } + + int error = snprintf(buffer, buffer_length, + "" + "%s " + "%s " + "%s" + "%s " + "%s " + "%s\n", + url, even ? "even" : "odd", + directory ? "dir" : "file", + name, type, size_string, unit, date, time); + if (error < 0 || error >= buffer_length) + /* Error or buffer too small */ + return false; + else + /* OK */ + return true; +} + + +/** + * Generates the bottom part of an HTML directroy listing page + * + * \return Bottom of directory listing HTML + * + * This is part of a series of functions. To generate a complete page, + * call the following functions in order: + * + * dirlist_generate_top() + * dirlist_generate_hide_columns() -- optional + * dirlist_generate_title() + * dirlist_generate_parent_link() -- optional + * dirlist_generate_headings() + * dirlist_generate_row() -- call 'n' times for 'n' rows + * dirlist_generate_bottom() + */ + +const char* dirlist_generate_bottom(void) +{ + return "
\n" + "\n" + "\n"; +} + + /** * Obtain display value and units for filesize after conversion to B/kB/MB/GB, * as appropriate. @@ -93,7 +365,7 @@ bool directory_create(struct content *c, const struct http_parameter *params) { * \return number of times bytesize has been divided by 1024 */ -int filesize_calculate(unsigned long *bytesize) +int dirlist_filesize_calculate(unsigned long *bytesize) { int i = 0; while (*bytesize > 1024 * 4) { @@ -105,6 +377,7 @@ int filesize_calculate(unsigned long *bytesize) return i; } + /** * Obtain display value for filesize after conversion to B/kB/MB/GB, * as appropriate @@ -113,12 +386,13 @@ int filesize_calculate(unsigned long *bytesize) * \return Value to display for file size, in units given by filesize_unit() */ -int filesize_value(unsigned long bytesize) +int dirlist_filesize_value(unsigned long bytesize) { - filesize_calculate(&bytesize); + dirlist_filesize_calculate(&bytesize); return (int)bytesize; } + /** * Obtain display units for filesize after conversion to B/kB/MB/GB, * as appropriate @@ -127,9 +401,24 @@ int filesize_value(unsigned long bytesize) * \return Units to display for file size, for value given by filesize_value() */ -char* filesize_unit(unsigned long bytesize) +char* dirlist_filesize_unit(unsigned long bytesize) { - return sizeunits[filesize_calculate(&bytesize)]; + const char* units[] = { "Bytes", "kBytes", "MBytes", "GBytes" }; + return (char*)units[dirlist_filesize_calculate(&bytesize)]; +} + + +bool directory_create(struct content *c, const struct http_parameter *params) { + if (!html_create(c, params)) + /* html_create() must have broadcast MSG_ERROR already, so we + * don't need to. */ + return false; + + binding_parse_chunk(c->data.html.parser_binding, + (uint8_t *) dirlist_generate_top(), + strlen(dirlist_generate_top())); + + return true; } bool directory_convert(struct content *c) { @@ -140,7 +429,7 @@ bool directory_convert(struct content *c) { char buffer[MAX_LENGTH]; char *nice_path, *cnv, *tmp; url_func_result res; - bool compare; + bool compare, directory; char *up; struct stat filestat; char *filepath, *mimetype = NULL; @@ -149,6 +438,7 @@ bool directory_convert(struct content *c) { int urlpath_size; char moddate[100]; char modtime[100]; + long long filesize; bool extendedinfo, evenrow = false; /* Get directory path from URL */ @@ -184,10 +474,11 @@ bool directory_convert(struct content *c) { } *cnv = '\0'; + /* Set which columns to suppress */ + dirlist_generate_hide_columns(0, buffer, MAX_LENGTH); + /* Print document title and heading */ - snprintf(buffer, sizeof(buffer), "Index of %s\n\n" - "\n

Index of %s

\n", - nice_path, nice_path); + dirlist_generate_title(nice_path, buffer, MAX_LENGTH); free(nice_path); binding_parse_chunk(c->data.html.parser_binding, @@ -198,9 +489,7 @@ bool directory_convert(struct content *c) { if (res == URL_FUNC_OK) { res = url_compare(content__get_url(c), up, false, &compare); if ((res == URL_FUNC_OK) && !compare) { - snprintf(buffer, sizeof(buffer), - "

%s

", - up, messages_get("FileParent")); + dirlist_generate_parent_link(up, buffer, MAX_LENGTH); binding_parse_chunk(c->data.html.parser_binding, (uint8_t *) buffer, strlen(buffer)); @@ -209,16 +498,7 @@ bool directory_convert(struct content *c) { } /* Print directory contents table column headings */ - snprintf(buffer, sizeof(buffer), - "
\n" - "%s " - "%s " - "%s " - "%s " - "%s\n", - messages_get("FileName"), messages_get("FileType"), - messages_get("FileSize"), messages_get("FileDate"), - messages_get("FileTime")); + dirlist_generate_headings(buffer, MAX_LENGTH); binding_parse_chunk(c->data.html.parser_binding, (uint8_t *) buffer, strlen(buffer)); @@ -257,7 +537,13 @@ bool directory_convert(struct content *c) { return false; } - urlpath_size = strlen(content__get_url(c)) + strlen(entry->d_name) + 2; + if (S_ISDIR(filestat.st_mode)) + directory = true; + else + directory = false; + + urlpath_size = strlen(content__get_url(c)) + + strlen(entry->d_name) + 2; urlpath = malloc(urlpath_size); if (urlpath != NULL) { strcpy(urlpath, content__get_url(c)); @@ -265,65 +551,41 @@ bool directory_convert(struct content *c) { strncat(urlpath, "/", urlpath_size); strncat(urlpath, entry->d_name, urlpath_size); - /* Start row and print item name */ - snprintf(buffer, sizeof(buffer), - "" - "%s ", - urlpath, - evenrow ? "even" : "odd", - S_ISDIR(filestat.st_mode) ? "dir" : "file", - entry->d_name); - - binding_parse_chunk(c->data.html.parser_binding, - (uint8_t *) buffer, strlen(buffer)); - if (extendedinfo == true) { /* Get date in output format */ if (strftime((char *)&moddate, sizeof moddate, "%a %d %b %Y", - localtime(&filestat.st_mtime)) == 0) + localtime( + &filestat.st_mtime)) == 0) strncpy(moddate, "-", sizeof moddate); /* Get time in output format */ if (strftime((char *)&modtime, sizeof modtime, "%H:%M", - localtime(&filestat.st_mtime)) == 0) + localtime( + &filestat.st_mtime)) == 0) strncpy(modtime, "-", sizeof modtime); - if (S_ISDIR(filestat.st_mode)) { - /* Directory: Print type and date/time */ - snprintf(buffer, sizeof(buffer), - "%s " - "" - " " - "%s " - "%s\n", - messages_get("FileDirectory"), - moddate, modtime); + if (directory) { + mimetype = (char*)messages_get( + "FileDirectory"); + filesize = -1; } else { - /* File: Print type, size, and date/time */ mimetype = fetch_mimetype(filepath); - snprintf(buffer, sizeof(buffer), - "%s " - "%d" - "%s " - "%s " - "%s\n", - mimetype, - filesize_value( - (unsigned long)filestat.st_size), - messages_get(filesize_unit( - (unsigned long)filestat.st_size)), - moddate, modtime); + filesize = (long long) + filestat.st_size; } } else { - /* Not got info, print empty cells */ - snprintf(buffer, sizeof(buffer), - " " - "" - " " - " " - "\n"); + strncpy(moddate, "", sizeof moddate); + strncpy(modtime, "", sizeof modtime); + filesize = -1; } + /* Print row */ + dirlist_generate_row(evenrow, directory, + urlpath, entry->d_name, + mimetype ? mimetype : (char*)"", + filesize, + moddate, modtime, + buffer, MAX_LENGTH); binding_parse_chunk(c->data.html.parser_binding, (uint8_t *) buffer, strlen(buffer)); @@ -345,7 +607,8 @@ bool directory_convert(struct content *c) { closedir(parent); binding_parse_chunk(c->data.html.parser_binding, - (uint8_t *) footer, sizeof(footer) - 1); + (uint8_t *) dirlist_generate_bottom(), + strlen(dirlist_generate_bottom())); c->type = CONTENT_HTML; return html_convert(c);