1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138

use std::borrow::Cow;

use backtrace::Backtrace;
use sentry_core::ClientOptions;

use crate::trim::{is_sys_function, trim_stacktrace};
use crate::utils::{
    demangle_symbol, filename, function_starts_with, parse_crate_name, strip_symbol,
};
use crate::{Frame, Stacktrace};

/// Processes a `Stacktrace`.
///
/// Trims a `Stacktrace` and marks frames as in-app based on the provided
/// `ClientOptions`.
pub fn process_event_stacktrace(stacktrace: &mut Stacktrace, options: &ClientOptions) {
    // automatically trim backtraces
    if options.trim_backtraces {
        trim_stacktrace(stacktrace, |frame, _| {
            if let Some(ref func) = frame.function {
                options.extra_border_frames.contains(&func.as_str())
            } else {
                false
            }
        })
    }

    // automatically prime in_app and set package
    let mut any_in_app = false;
    for frame in &mut stacktrace.frames {
        let func_name = match frame.function {
            Some(ref func) => func,
            None => continue,
        };

        // set package if missing to crate prefix
        if frame.package.is_none() {
            frame.package = parse_crate_name(func_name);
        }

        match frame.in_app {
            Some(true) => {
                any_in_app = true;
                continue;
            }
            Some(false) => {
                continue;
            }
            None => {}
        }

        for m in &options.in_app_exclude {
            if function_starts_with(func_name, m) {
                frame.in_app = Some(false);
                break;
            }
        }

        if frame.in_app.is_some() {
            continue;
        }

        for m in &options.in_app_include {
            if function_starts_with(func_name, m) {
                frame.in_app = Some(true);
                any_in_app = true;
                break;
            }
        }

        if frame.in_app.is_some() {
            continue;
        }

        if is_sys_function(func_name) {
            frame.in_app = Some(false);
        }
    }

    if !any_in_app {
        for frame in &mut stacktrace.frames {
            if frame.in_app.is_none() {
                frame.in_app = Some(true);
            }
        }
    }
}

/// Convert a `backtrace::Backtrace` into a Rust `Stacktrace`
pub fn backtrace_to_stacktrace(bt: &Backtrace) -> Option<Stacktrace> {
    let frames = bt
        .frames()
        .iter()
        .flat_map(|frame| {
            // For each frame, there may be multiple symbols if a function was inlined, so
            // add an entry for each symbol.
            let symbols = frame.symbols();
            symbols
                .iter()
                .map(move |sym| {
                    let abs_path = sym.filename().map(|m| m.to_string_lossy().to_string());
                    let filename = abs_path.as_ref().map(|p| filename(p).to_string());
                    let real_symbol = sym
                        .name()
                        .map_or(Cow::Borrowed("<unknown>"), |n| Cow::Owned(n.to_string()));
                    let symbol = strip_symbol(&real_symbol);
                    let function = demangle_symbol(symbol);
                    Frame {
                        symbol: if symbol != function {
                            Some(symbol.into())
                        } else {
                            None
                        },
                        function: Some(function),
                        instruction_addr: Some(frame.ip().into()),
                        abs_path,
                        filename,
                        lineno: sym.lineno().map(u64::from),
                        colno: None,
                        ..Default::default()
                    }

                    // If there were no symbols at all, make sure to add at least one frame, as we
                    // may be able to symbolicate it on the server.
                })
                .chain(if symbols.is_empty() {
                    Some(Frame {
                        instruction_addr: Some(frame.ip().into()),
                        function: Some("<unknown>".into()),
                        ..Default::default()
                    })
                } else {
                    None
                })
        })
        .collect();
    Stacktrace::from_frames_reversed(frames)
}