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Merge pull request #2672 from ianyfan/swaybar

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swaybar: fix parsing errors when json is sent in parts
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Drew DeVault 2018-09-21 12:52:57 -05:00 committed by GitHub
commit e554274673
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1 changed files with 14 additions and 3 deletions
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17
swaybar/i3bar.c
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@ -117,7 +117,9 @@ bool i3bar_handle_readable(struct status_line *status) {
memmove(status->buffer, &status->buffer[c], status->buffer_index); memmove(status->buffer, &status->buffer[c], status->buffer_index);
break; break;
} else if (!isspace(status->buffer[c])) { } else if (!isspace(status->buffer[c])) {
status_error(status, "[invalid json]"); wlr_log(WLR_DEBUG, "Invalid i3bar json: expected '[' but encountered '%c'",
status->buffer[c]);
status_error(status, "[invalid i3bar json]");
return true; return true;
} }
} }
@ -155,6 +157,8 @@ bool i3bar_handle_readable(struct status_line *status) {
++buffer_pos; ++buffer_pos;
break; break;
} else if (!isspace(status->buffer[buffer_pos])) { } else if (!isspace(status->buffer[buffer_pos])) {
wlr_log(WLR_DEBUG, "Invalid i3bar json: expected ',' but encountered '%c'",
status->buffer[buffer_pos]);
status_error(status, "[invalid i3bar json]"); status_error(status, "[invalid i3bar json]");
return true; return true;
} }
@ -166,7 +170,8 @@ bool i3bar_handle_readable(struct status_line *status) {
} else { } else {
test_object = json_tokener_parse_ex(status->tokener, test_object = json_tokener_parse_ex(status->tokener,
&status->buffer[buffer_pos], status->buffer_index - buffer_pos); &status->buffer[buffer_pos], status->buffer_index - buffer_pos);
if (json_tokener_get_error(status->tokener) == json_tokener_success) { enum json_tokener_error err = json_tokener_get_error(status->tokener);
if (err == json_tokener_success) {
if (json_object_get_type(test_object) == json_type_array) { if (json_object_get_type(test_object) == json_type_array) {
if (last_object) { if (last_object) {
json_object_put(last_object); json_object_put(last_object);
@ -198,12 +203,14 @@ bool i3bar_handle_readable(struct status_line *status) {
continue; // look for comma without reading more input continue; // look for comma without reading more input
} }
buffer_pos = status->buffer_index = 0; buffer_pos = status->buffer_index = 0;
} else if (json_tokener_get_error(status->tokener) == json_tokener_continue) { } else if (err == json_tokener_continue) {
json_tokener_reset(status->tokener);
if (status->buffer_index < status->buffer_size) { if (status->buffer_index < status->buffer_size) {
// move the object to the start of the buffer // move the object to the start of the buffer
status->buffer_index -= buffer_pos; status->buffer_index -= buffer_pos;
memmove(status->buffer, &status->buffer[buffer_pos], memmove(status->buffer, &status->buffer[buffer_pos],
status->buffer_index); status->buffer_index);
buffer_pos = 0;
} else { } else {
// expand buffer // expand buffer
status->buffer_size *= 2; status->buffer_size *= 2;
@ -217,6 +224,10 @@ bool i3bar_handle_readable(struct status_line *status) {
} }
} }
} else { } else {
char last_char = status->buffer[status->buffer_index - 1];
status->buffer[status->buffer_index - 1] = '\0';
wlr_log(WLR_DEBUG, "Failed to parse i3bar json - %s: '%s%c'",
json_tokener_error_desc(err), &status->buffer[buffer_pos], last_char);
status_error(status, "[failed to parse i3bar json]"); status_error(status, "[failed to parse i3bar json]");
return true; return true;
} }